diff --git a/assets/mods/basegame/weathers/WeatherClear.json b/assets/mods/basegame/weathers/WeatherClear.json
index cac5156f0..f64fbcdf7 100644
--- a/assets/mods/basegame/weathers/WeatherClear.json
+++ b/assets/mods/basegame/weathers/WeatherClear.json
@@ -1,7 +1,7 @@
 {
   "identifier": "clear01",
-  "skyboxGradColourMap": "generic_skybox.tga",
-  "daylightClut": "clut_daylight.tga",
+  "skyboxGradColourMap": "model:hosek",
+  "daylightClut": "lut:clut_daylight.tga",
   "tags": "generic,clear",
   "cloudChance": 12,
   "cloudGamma": [1.2, 2.4],
diff --git a/assets/mods/basegame/weathers/WeatherGeneric.json b/assets/mods/basegame/weathers/WeatherGeneric.json
index 97196e05c..50c0e769f 100644
--- a/assets/mods/basegame/weathers/WeatherGeneric.json
+++ b/assets/mods/basegame/weathers/WeatherGeneric.json
@@ -1,7 +1,7 @@
 {
   "identifier": "generic01",
-  "skyboxGradColourMap": "generic_skybox.tga",
-  "daylightClut": "clut_daylight.tga",
+  "skyboxGradColourMap": "model:hosek",
+  "daylightClut": "lut:clut_daylight.tga",
   "tags": "generic",
   "cloudChance": 60,
   "cloudGamma": [0.9, 2.4],
diff --git a/assets/mods/basegame/weathers/WeatherGeneric2.json b/assets/mods/basegame/weathers/WeatherGeneric2.json
index 3dfce35e3..37926c794 100644
--- a/assets/mods/basegame/weathers/WeatherGeneric2.json
+++ b/assets/mods/basegame/weathers/WeatherGeneric2.json
@@ -1,7 +1,7 @@
 {
   "identifier": "generic02",
-  "skyboxGradColourMap": "generic_skybox.tga",
-  "daylightClut": "clut_daylight.tga",
+  "skyboxGradColourMap": "model:hosek",
+  "daylightClut": "lut:clut_daylight.tga",
   "tags": "generic2",
   "cloudChance": 150,
   "cloudGamma": [0.9, 2.4],
diff --git a/assets/mods/basegame/weathers/WeatherOvercast.json b/assets/mods/basegame/weathers/WeatherOvercast.json
index 2ec4f2e97..bd2a85b3d 100644
--- a/assets/mods/basegame/weathers/WeatherOvercast.json
+++ b/assets/mods/basegame/weathers/WeatherOvercast.json
@@ -1,7 +1,7 @@
 {
   "identifier": "overcast01",
-  "skyboxGradColourMap": "generic_skybox.tga",
-  "daylightClut": "clut_daylight.tga",
+  "skyboxGradColourMap": "model:hosek",
+  "daylightClut": "lut:clut_daylight.tga",
   "tags": "overcast",
   "cloudChance": 200,
   "cloudGamma": [1.45, 1.0],
diff --git a/assets/mods/basegame/weathers/weatherSpace.json b/assets/mods/basegame/weathers/weatherSpace.json
new file mode 100644
index 000000000..f2ce7f586
--- /dev/null
+++ b/assets/mods/basegame/weathers/weatherSpace.json
@@ -0,0 +1,15 @@
+{
+  "identifier": "space",
+  "skyboxGradColourMap": "static:#020202,#060604",
+  "daylightClut": "static:#FFFFFF",
+  "tags": "space",
+  "cloudChance": 0,
+  "cloudGamma": [1.0, 1.0],
+  "cloudGammaVariance": [0.0, 0.0],
+  "windSpeed": 0.0,
+  "windSpeedVariance": 0.0,
+  "windSpeedDamping": 0.0,
+  "clouds": {},
+  "atmoTurbidity": 1.0,
+  "shaderVibrancy": [1.0, 1.0]
+}
\ No newline at end of file
diff --git a/src/net/torvald/parametricsky/Application.kt b/src/net/torvald/parametricsky/Application.kt
index ff7efaf64..be682d22d 100644
--- a/src/net/torvald/parametricsky/Application.kt
+++ b/src/net/torvald/parametricsky/Application.kt
@@ -13,14 +13,11 @@ import net.torvald.unicode.EMDASH
 import net.torvald.colourutil.*
 import net.torvald.parametricsky.datasets.DatasetCIEXYZ
 import net.torvald.terrarum.abs
-import net.torvald.terrarum.clut.Skybox
-import net.torvald.terrarum.clut.Skybox.coerceInSmoothly
-import net.torvald.terrarum.clut.Skybox.mapCircle
 import net.torvald.terrarum.inUse
 import net.torvald.terrarum.modulebasegame.worldgenerator.HALF_PI
+import net.torvald.terrarum.weather.SkyboxModelHosek.coerceInSmoothly
 import java.awt.BorderLayout
 import java.awt.Dimension
-import java.lang.Math.pow
 import javax.swing.*
 import kotlin.math.*
 
diff --git a/src/net/torvald/terrarum/GdxColorMap.kt b/src/net/torvald/terrarum/GdxColorMap.kt
index 6a73e0e39..4444655c0 100644
--- a/src/net/torvald/terrarum/GdxColorMap.kt
+++ b/src/net/torvald/terrarum/GdxColorMap.kt
@@ -61,6 +61,15 @@ class GdxColorMap {
         is2D = (height > 1)
     }
 
+    constructor(width: Int, height: Int, colours: List<Color>) {
+        dataRaw = colours.map { it.toIntBits() }.toIntArray()
+        dataGdxColor = dataRaw.map { Color(it) }.toTypedArray()
+        dataCvec = dataRaw.map { Cvec(it) }.toTypedArray()
+        this.width = width
+        this.height = height
+        is2D = (height > 1)
+    }
+
     private val dataRaw: IntArray
     private val dataGdxColor: Array<Color>
     private val dataCvec: Array<Cvec>
diff --git a/src/net/torvald/terrarum/clut/GenerateSkyboxTextureAtlas.kt b/src/net/torvald/terrarum/clut/GenerateSkyboxTextureAtlas.kt
index df7e72294..6f5f16f16 100644
--- a/src/net/torvald/terrarum/clut/GenerateSkyboxTextureAtlas.kt
+++ b/src/net/torvald/terrarum/clut/GenerateSkyboxTextureAtlas.kt
@@ -8,12 +8,13 @@ import net.torvald.colourutil.toRGB
 import net.torvald.gdx.graphics.Cvec
 import net.torvald.parametricsky.ArHosekSkyModel
 import net.torvald.terrarum.abs
-import net.torvald.terrarum.clut.Skybox.coerceInSmoothly
-import net.torvald.terrarum.clut.Skybox.mapCircle
-import net.torvald.terrarum.clut.Skybox.scaleToFit
 import net.torvald.terrarum.modulebasegame.worldgenerator.HALF_PI
 import net.torvald.terrarum.serialise.toLittle
 import net.torvald.terrarum.serialise.toUint
+import net.torvald.terrarum.weather.SkyboxModelHosek
+import net.torvald.terrarum.weather.SkyboxModelHosek.coerceInSmoothly
+import net.torvald.terrarum.weather.SkyboxModelHosek.mapCircle
+import net.torvald.terrarum.weather.SkyboxModelHosek.scaleToFit
 import java.io.File
 import kotlin.math.PI
 import kotlin.math.cos
@@ -42,7 +43,7 @@ class GenerateSkyboxTextureAtlas {
         val state =
             ArHosekSkyModel.arhosek_xyz_skymodelstate_alloc_init(turbidity, albedo, elevationRad.abs())
 
-        for (yp in 0 until Skybox.gradSize) {
+        for (yp in 0 until SkyboxModelHosek.gradSize) {
             val yi = yp - 10
             val xf = -elevationDeg / 90.0
             var yf = (yi / 58.0).coerceIn(0.0, 1.0).mapCircle().coerceInSmoothly(0.0, 0.95)
@@ -81,9 +82,9 @@ class GenerateSkyboxTextureAtlas {
     // y: increasing turbidity (1.0 .. 10.0, in steps of 0.333)
     // x: elevations (-75 .. 75 in steps of 1, then albedo of [0.1, 0.3, 0.5, 0.7, 0.9])
     val TGA_HEADER_SIZE = 18
-    val texh = Skybox.gradSize * Skybox.turbCnt
-    val texh2 = Skybox.turbCnt
-    val texw = Skybox.elevCnt * Skybox.albedoCnt * 2
+    val texh = SkyboxModelHosek.gradSize * SkyboxModelHosek.turbCnt
+    val texh2 = SkyboxModelHosek.turbCnt
+    val texw = SkyboxModelHosek.elevCnt * SkyboxModelHosek.albedoCnt * 2
     val bytesSize = texw * texh
     val bytes2Size = texw * texh2
     val bytes = ByteArray(TGA_HEADER_SIZE + bytesSize * 4 + 26)
@@ -113,18 +114,18 @@ class GenerateSkyboxTextureAtlas {
         // write pixels
         for (gammaPair in 0..1) {
 
-            for (albedo0 in 0 until Skybox.albedoCnt) {
-                val albedo = Skybox.albedos[albedo0]
+            for (albedo0 in 0 until SkyboxModelHosek.albedoCnt) {
+                val albedo = SkyboxModelHosek.albedos[albedo0]
                 println("Albedo=$albedo")
-                for (turb0 in 0 until Skybox.turbCnt) {
-                    val turbidity = Skybox.turbiditiesD[turb0]
+                for (turb0 in 0 until SkyboxModelHosek.turbCnt) {
+                    val turbidity = SkyboxModelHosek.turbiditiesD[turb0]
                     println("....... Turbidity=$turbidity")
-                    for (elev0 in 0 until Skybox.elevCnt) {
-                        var elevationDeg = Skybox.elevationsD[elev0]
+                    for (elev0 in 0 until SkyboxModelHosek.elevCnt) {
+                        var elevationDeg = SkyboxModelHosek.elevationsD[elev0]
                         if (elevationDeg == 0.0) elevationDeg = 0.5 // dealing with the edge case
                         generateStrip(gammaPair, albedo, turbidity, elevationDeg) { yp, i, colour ->
-                            val imgOffX = albedo0 * Skybox.elevCnt + elev0 + Skybox.elevCnt * Skybox.albedoCnt * gammaPair
-                            val imgOffY = texh - 1 - (Skybox.gradSize * turb0 + yp)
+                            val imgOffX = albedo0 * SkyboxModelHosek.elevCnt + elev0 + SkyboxModelHosek.elevCnt * SkyboxModelHosek.albedoCnt * gammaPair
+                            val imgOffY = texh - 1 - (SkyboxModelHosek.gradSize * turb0 + yp)
                             val fileOffset = TGA_HEADER_SIZE + 4 * (imgOffY * texw + imgOffX)
                             bytes[fileOffset + i] = colour
                         }
@@ -140,8 +141,8 @@ class GenerateSkyboxTextureAtlas {
     private val gradSizes = listOf(50)
 
     private fun getByte(gammaPair: Int, albedo0: Int, turb0: Int, elev0: Int, yp: Int, channel: Int): Byte {
-        val imgOffX = albedo0 * Skybox.elevCnt + elev0 + Skybox.elevCnt * Skybox.albedoCnt * gammaPair
-        val imgOffY = texh - 1 - (Skybox.gradSize * turb0 + yp)
+        val imgOffX = albedo0 * SkyboxModelHosek.elevCnt + elev0 + SkyboxModelHosek.elevCnt * SkyboxModelHosek.albedoCnt * gammaPair
+        val imgOffY = texh - 1 - (SkyboxModelHosek.gradSize * turb0 + yp)
         val fileOffset = TGA_HEADER_SIZE + 4 * (imgOffY * texw + imgOffX)
         return bytes[fileOffset + channel]
     }
@@ -171,13 +172,13 @@ class GenerateSkyboxTextureAtlas {
 
         for (gammaPair in 0..1) {
 
-            for (albedo0 in 0 until Skybox.albedoCnt) {
-                val albedo = Skybox.albedos[albedo0]
+            for (albedo0 in 0 until SkyboxModelHosek.albedoCnt) {
+                val albedo = SkyboxModelHosek.albedos[albedo0]
                 println("Albedo=$albedo")
-                for (turb0 in 0 until Skybox.turbCnt) {
-                    val turbidity = Skybox.turbiditiesD[turb0]
+                for (turb0 in 0 until SkyboxModelHosek.turbCnt) {
+                    val turbidity = SkyboxModelHosek.turbiditiesD[turb0]
                     println("....... Turbidity=$turbidity")
-                    for (elev0 in 0 until Skybox.elevCnt) {
+                    for (elev0 in 0 until SkyboxModelHosek.elevCnt) {
 
                         val avrB = (gradSizes.sumOf { getByte(gammaPair, albedo0, turb0, elev0, it, 0).toUint() }.toDouble() / gradSizes.size).div(255.0).toFloat()
                         val avrG = (gradSizes.sumOf { getByte(gammaPair, albedo0, turb0, elev0, it, 1).toUint() }.toDouble() / gradSizes.size).div(255.0).toFloat()
@@ -193,7 +194,7 @@ class GenerateSkyboxTextureAtlas {
                             colour.a.times(255f).roundToInt().coerceIn(0..255).toByte()
                         )
 
-                        val imgOffX = albedo0 * Skybox.elevCnt + elev0 + Skybox.elevCnt * Skybox.albedoCnt * gammaPair
+                        val imgOffX = albedo0 * SkyboxModelHosek.elevCnt + elev0 + SkyboxModelHosek.elevCnt * SkyboxModelHosek.albedoCnt * gammaPair
                         val imgOffY = texh2 - 1 - turb0
                         val fileOffset = TGA_HEADER_SIZE + 4 * (imgOffY * texw + imgOffX)
 
diff --git a/src/net/torvald/terrarum/modulebasegame/TitleScreen.kt b/src/net/torvald/terrarum/modulebasegame/TitleScreen.kt
index feefbf17d..2abccfe3c 100644
--- a/src/net/torvald/terrarum/modulebasegame/TitleScreen.kt
+++ b/src/net/torvald/terrarum/modulebasegame/TitleScreen.kt
@@ -17,7 +17,6 @@ import net.torvald.terrarum.App.printdbgerr
 import net.torvald.terrarum.TerrarumAppConfiguration.TILE_SIZE
 import net.torvald.terrarum.TerrarumAppConfiguration.TILE_SIZED
 import net.torvald.terrarum.TerrarumAppConfiguration.TILE_SIZEF
-import net.torvald.terrarum.clut.Skybox
 import net.torvald.terrarum.console.CommandDict
 import net.torvald.terrarum.gameactors.*
 import net.torvald.terrarum.gameactors.ai.ActorAI
@@ -35,8 +34,8 @@ import net.torvald.terrarum.realestate.LandUtil
 import net.torvald.terrarum.serialise.ReadSimpleWorld
 import net.torvald.terrarum.ui.Toolkit
 import net.torvald.terrarum.ui.UICanvas
-import net.torvald.terrarum.ui.UIItemTextButton
 import net.torvald.terrarum.utils.OpenURL
+import net.torvald.terrarum.weather.SkyboxModelHosek
 import net.torvald.terrarum.weather.WeatherMixer
 import net.torvald.terrarum.worlddrawer.WorldCamera
 import net.torvald.util.CircularArray
@@ -247,7 +246,7 @@ class TitleScreen(batch: FlippingSpriteBatch) : IngameInstance(batch) {
         uiContainer.add(uiRemoCon)
 
         CommandDict // invoke
-        Skybox.loadlut() // invoke
+        SkyboxModelHosek.loadlut() // invoke
 //        Skybox.initiate() // invoke the lengthy calculation
         // TODO add console here
 
diff --git a/src/net/torvald/terrarum/weather/BaseModularWeather.kt b/src/net/torvald/terrarum/weather/BaseModularWeather.kt
index a0b257757..35ff21ddf 100644
--- a/src/net/torvald/terrarum/weather/BaseModularWeather.kt
+++ b/src/net/torvald/terrarum/weather/BaseModularWeather.kt
@@ -19,7 +19,7 @@ import kotlin.math.absoluteValue
 data class BaseModularWeather(
     val identifier: String,
     val json: JsonValue,
-    var skyboxGradColourMap: GdxColorMap, // row 0: skybox grad top, row 1: skybox grad bottom, row 2: sunlight (RGBA)
+    var skyboxGradColourMap: SkyboxModel, // row 0: skybox grad top, row 1: skybox grad bottom, row 2: sunlight (RGBA)
     val daylightClut: GdxColorMap,
     val tags: List<String>,
     val cloudChance: Float,
diff --git a/src/net/torvald/terrarum/weather/SkyboxGradSimple.kt b/src/net/torvald/terrarum/weather/SkyboxGradSimple.kt
new file mode 100644
index 000000000..535719d91
--- /dev/null
+++ b/src/net/torvald/terrarum/weather/SkyboxGradSimple.kt
@@ -0,0 +1,12 @@
+package net.torvald.terrarum.weather
+
+import net.torvald.terrarum.GdxColorMap
+
+/**
+ * Created by minjaesong on 2025-03-22.
+ */
+class SkyboxGradSimple(val clut: GdxColorMap): SkyboxModel {
+
+
+    override fun dispose() {}
+}
\ No newline at end of file
diff --git a/src/net/torvald/terrarum/weather/SkyboxModel.kt b/src/net/torvald/terrarum/weather/SkyboxModel.kt
new file mode 100644
index 000000000..c9d4af3e0
--- /dev/null
+++ b/src/net/torvald/terrarum/weather/SkyboxModel.kt
@@ -0,0 +1,9 @@
+package net.torvald.terrarum.weather
+
+import com.badlogic.gdx.utils.Disposable
+
+/**
+ * Created by minjaesong on 2025-03-22.
+ */
+interface SkyboxModel : Disposable {
+}
\ No newline at end of file
diff --git a/src/net/torvald/terrarum/clut/Skybox.kt b/src/net/torvald/terrarum/weather/SkyboxModelHosek.kt
similarity index 96%
rename from src/net/torvald/terrarum/clut/Skybox.kt
rename to src/net/torvald/terrarum/weather/SkyboxModelHosek.kt
index ded74fa29..97ca2a585 100644
--- a/src/net/torvald/terrarum/clut/Skybox.kt
+++ b/src/net/torvald/terrarum/weather/SkyboxModelHosek.kt
@@ -1,4 +1,4 @@
-package net.torvald.terrarum.clut
+package net.torvald.terrarum.weather
 
 import com.badlogic.gdx.Gdx
 import com.badlogic.gdx.graphics.Pixmap
@@ -14,14 +14,13 @@ import net.torvald.terrarum.App
 import net.torvald.terrarum.App.printdbg
 import net.torvald.terrarum.abs
 import net.torvald.terrarum.floorToInt
-import net.torvald.terrarum.toInt
 import net.torvald.terrarumsansbitmap.gdx.TextureRegionPack
 import kotlin.math.*
 
 /**
  * Created by minjaesong on 2023-07-09.
  */
-object Skybox : Disposable {
+object SkyboxModelHosek : SkyboxModel {
 
     private const val HALF_PI = 1.5707963267948966
     private const val PI = 3.141592653589793
@@ -294,8 +293,8 @@ object Skybox : Disposable {
     }
 
     override fun dispose() {
-        if (Skybox::gradTexBinLowAlbedo.isInitialized) gradTexBinLowAlbedo.forEach { it.texture.dispose() }
-        if (Skybox::gradTexBinHighAlbedo.isInitialized) gradTexBinHighAlbedo.forEach { it.texture.dispose() }
-        if (Skybox::tex.isInitialized) tex.dispose()
+        if (SkyboxModelHosek::gradTexBinLowAlbedo.isInitialized) gradTexBinLowAlbedo.forEach { it.texture.dispose() }
+        if (SkyboxModelHosek::gradTexBinHighAlbedo.isInitialized) gradTexBinHighAlbedo.forEach { it.texture.dispose() }
+        if (SkyboxModelHosek::tex.isInitialized) tex.dispose()
     }
 }
\ No newline at end of file
diff --git a/src/net/torvald/terrarum/weather/WeatherCodex.kt b/src/net/torvald/terrarum/weather/WeatherCodex.kt
index 261c96f48..8c819b3c7 100644
--- a/src/net/torvald/terrarum/weather/WeatherCodex.kt
+++ b/src/net/torvald/terrarum/weather/WeatherCodex.kt
@@ -1,5 +1,6 @@
 package net.torvald.terrarum.weather
 
+import com.badlogic.gdx.graphics.Color
 import com.badlogic.gdx.math.Vector2
 import com.badlogic.gdx.utils.Disposable
 import net.torvald.terrarum.App
@@ -39,6 +40,8 @@ class WeatherCodex : Disposable {
 
     fun readFromJson(modname: String, file: File) = readFromJson(modname, file.path)
 
+    private val pathToImage = "weathers"
+
     fun readFromJson(modname: String, path: String) {
         /* JSON structure:
 {
@@ -52,12 +55,11 @@ class WeatherCodex : Disposable {
   ]
 }
          */
-        val pathToImage = "weathers"
 
         val JSON = JsonFetcher(path)
 
-        val skyboxInJson = JSON.getString("skyboxGradColourMap")
-        val lightbox = JSON.getString("daylightClut")
+        val skyboxModel = JSON.getString("skyboxGradColourMap")
+        val lightboxModel = JSON.getString("daylightClut")
 
         val cloudsMap = ArrayList<CloudProps>()
         val clouds = JSON["clouds"]
@@ -81,8 +83,8 @@ class WeatherCodex : Disposable {
         val obj = BaseModularWeather(
             identifier = ident,
             json = JSON,
-            skyboxGradColourMap = GdxColorMap(ModMgr.getGdxFile(modname, "$pathToImage/${skyboxInJson}")),
-            daylightClut = GdxColorMap(ModMgr.getGdxFile(modname, "$pathToImage/${lightbox}")),
+            skyboxGradColourMap = getSkyboxModelByName(modname, skyboxModel),
+            daylightClut = getLightboxModelByName(modname, lightboxModel),
             tags = tags,
             cloudChance = JSON.getFloat("cloudChance"),
             windSpeed = JSON.getFloat("windSpeed"),
@@ -118,4 +120,71 @@ class WeatherCodex : Disposable {
         }
         else getByTag(tag)!!.random()
     }
+
+    private fun getSkyboxModelByName(modname: String, name: String): SkyboxModel {
+        return if (name.startsWith("model:")) {
+            when (name.substring(6)) {
+                "hosek" -> SkyboxModelHosek
+                else -> throw UnsupportedOperationException("Unknown skybox model: '$name'")
+            }
+        }
+        else if (name.startsWith("lut:")) {
+            val filename = name.substring(4)
+            val colourMap = GdxColorMap(ModMgr.getGdxFile(modname, "$pathToImage/${filename}"))
+            SkyboxGradSimple(colourMap)
+        }
+        else if (name.startsWith("static:")) {
+            val argstr = name.substring(7)
+            val args = argstr.split(',').map {
+                if (it.length == 7) // #RRGGBB
+                    Color(
+                        it.substring(1, 3).toInt(16) / 255.0f,
+                        it.substring(3, 5).toInt(16) / 255.0f,
+                        it.substring(5, 7).toInt(16) / 255.0f,
+                        1f,
+                    )
+                else if (it.length == 9) // #RRGGBBAA
+                    Color(
+                        it.substring(1, 3).toInt(16) / 255.0f,
+                        it.substring(3, 5).toInt(16) / 255.0f,
+                        it.substring(5, 7).toInt(16) / 255.0f,
+                        it.substring(7, 9).toInt(16) / 255.0f,
+                    )
+                else if (it.length == 4) // #RGB
+                    Color(
+                        it.substring(1, 2).toInt(16) / 15.0f,
+                        it.substring(2, 3).toInt(16) / 15.0f,
+                        it.substring(3, 4).toInt(16) / 15.0f,
+                        1f,
+                    )
+                else if (it.length == 5) // #RGBA
+                    Color(
+                        it.substring(1, 2).toInt(16) / 15.0f,
+                        it.substring(2, 3).toInt(16) / 15.0f,
+                        it.substring(3, 4).toInt(16) / 15.0f,
+                        it.substring(4, 5).toInt(16) / 15.0f,
+                    )
+                else throw IllegalArgumentException("Unknown colour code: $it")
+            }
+            SkyboxGradSimple(GdxColorMap(args.size, 1, args))
+        }
+        else {
+            throw UnsupportedOperationException("Unknown skybox: '$name'")
+        }
+    }
+
+    private fun getLightboxModelByName(modname: String, name: String): GdxColorMap {
+        return if (name.startsWith("lut:")) {
+            val filename = name.substring(4)
+            GdxColorMap(ModMgr.getGdxFile(modname, "$pathToImage/${filename}"))
+        }
+        else if (name.startsWith("static:")) {
+            val argstr = name.substring(7)
+            val args = argstr.split(',').map { Color.WHITE }
+            GdxColorMap(args.size, 1, args)
+        }
+        else {
+            throw UnsupportedOperationException("Unknown skybox: '$name'")
+        }
+    }
 }
\ No newline at end of file
diff --git a/src/net/torvald/terrarum/weather/WeatherMixer.kt b/src/net/torvald/terrarum/weather/WeatherMixer.kt
index c6eaf5c62..46f44cb77 100644
--- a/src/net/torvald/terrarum/weather/WeatherMixer.kt
+++ b/src/net/torvald/terrarum/weather/WeatherMixer.kt
@@ -19,17 +19,11 @@ import net.torvald.terrarum.gameworld.GameWorld
 import net.torvald.terrarum.gameworld.WorldTime
 import net.torvald.terrarum.gameworld.WorldTime.Companion.DAY_LENGTH
 import net.torvald.terrarum.RNGConsumer
-import net.torvald.terrarum.clut.Skybox
-import net.torvald.terrarum.clut.Skybox.elevCnt
-import net.torvald.terrarum.utils.JsonFetcher
-import net.torvald.terrarum.utils.forEachSiblings
+import net.torvald.terrarum.weather.SkyboxModelHosek.elevCnt
 import net.torvald.terrarum.weather.WeatherObjectCloud.Companion.ALPHA_ROLLOFF_Z
 import net.torvald.terrarum.weather.WeatherObjectCloud.Companion.NEWBORN_GROWTH_TIME
 import net.torvald.terrarum.worlddrawer.WorldCamera
-import net.torvald.terrarumsansbitmap.gdx.TextureRegionPack
 import net.torvald.util.SortedArrayList
-import java.io.File
-import java.io.FileFilter
 import java.lang.Double.doubleToLongBits
 import java.lang.Math.toDegrees
 import kotlin.collections.ArrayList
@@ -57,7 +51,7 @@ internal object WeatherMixer : RNGConsumer {
     val DEFAULT_WEATHER = BaseModularWeather(
         "default",
         JsonValue(JsonValue.ValueType.`object`),
-        GdxColorMap(1, 3, Color(0x55aaffff), Color(0xaaffffff.toInt()), Color.WHITE),
+        SkyboxGradSimple(GdxColorMap(1, 2, Color(0x55aaffff), Color(0xaaffffff.toInt()))),
         GdxColorMap(2, 2, Color.WHITE, Color.WHITE, Color.WHITE, Color.WHITE),
         listOf("default"),
         0f,
@@ -556,7 +550,7 @@ internal object WeatherMixer : RNGConsumer {
         fun g(x: Double) = Math.toDegrees(atan(RECIPROCAL_OF_APPARENT_SOLAR_Y_AT_45DEG * x))
         val phi = currentsolarDeg + CLOUD_SOLARDEG_OFFSET
         val x = cloudY
-        return g(x + a(phi)).bipolarClamp(Skybox.elevMax)
+        return g(x + a(phi)).bipolarClamp(SkyboxModelHosek.elevMax)
     }
 
     /**
@@ -661,7 +655,7 @@ internal object WeatherMixer : RNGConsumer {
 
         val gradY = -(gH - App.scr.height) * ((parallax + 1f) / 2f)
 
-        val (tex, uvs, turbTihsBlend, albThisBlend, turbOldBlend, albOldBlend) = Skybox.getUV(
+        val (tex, uvs, turbTihsBlend, albThisBlend, turbOldBlend, albOldBlend) = SkyboxModelHosek.getUV(
             solarElev,
             oldTurbidity,
             oldAlbedo,
@@ -819,14 +813,14 @@ internal object WeatherMixer : RNGConsumer {
         val angleX2 = (angleX1 + 1).coerceAtMost(150)
         val ax = solarAngleInDeg - solarAngleInDegInt
         // fine-grained
-        val turbY = turbidity.coerceIn(Skybox.turbiditiesD.first(), Skybox.turbiditiesD.last()).minus(1.0)
-            .times(Skybox.turbDivisor)
+        val turbY = turbidity.coerceIn(SkyboxModelHosek.turbiditiesD.first(), SkyboxModelHosek.turbiditiesD.last()).minus(1.0)
+            .times(SkyboxModelHosek.turbDivisor)
         val turbY1 = turbY.floorToInt()
-        val turbY2 = (turbY1 + 1).coerceAtMost(Skybox.turbCnt - 1)
+        val turbY2 = (turbY1 + 1).coerceAtMost(SkyboxModelHosek.turbCnt - 1)
         val tx = turbY - turbY1
         // coarse-grained
         val albX =
-            albedo.coerceIn(Skybox.albedos.first(), Skybox.albedos.last()).times(5.0) // 0..5
+            albedo.coerceIn(SkyboxModelHosek.albedos.first(), SkyboxModelHosek.albedos.last()).times(5.0) // 0..5
         val albX1 = albX.floorToInt() * elevCnt
         val albX2 = (albX + 1).floorToInt().coerceAtMost(5) * elevCnt
         val bx = ((albX * elevCnt) - albX1) / elevCnt
@@ -844,14 +838,14 @@ internal object WeatherMixer : RNGConsumer {
         val a2t1b2A = colorMap.getCvec(albX2 + angleX2, turbY1)
         val a1t2b2A = colorMap.getCvec(albX2 + angleX1, turbY2)
         val a2t2b2A = colorMap.getCvec(albX2 + angleX2, turbY2)
-        val a1t1b1B = colorMap.getCvec(albX1 + angleX1 + Skybox.albedoCnt * elevCnt, turbY1)
-        val a2t1b1B = colorMap.getCvec(albX1 + angleX2 + Skybox.albedoCnt * elevCnt, turbY1)
-        val a1t2b1B = colorMap.getCvec(albX1 + angleX1 + Skybox.albedoCnt * elevCnt, turbY2)
-        val a2t2b1B = colorMap.getCvec(albX1 + angleX2 + Skybox.albedoCnt * elevCnt, turbY2)
-        val a1t1b2B = colorMap.getCvec(albX2 + angleX1 + Skybox.albedoCnt * elevCnt, turbY1)
-        val a2t1b2B = colorMap.getCvec(albX2 + angleX2 + Skybox.albedoCnt * elevCnt, turbY1)
-        val a1t2b2B = colorMap.getCvec(albX2 + angleX1 + Skybox.albedoCnt * elevCnt, turbY2)
-        val a2t2b2B = colorMap.getCvec(albX2 + angleX2 + Skybox.albedoCnt * elevCnt, turbY2)
+        val a1t1b1B = colorMap.getCvec(albX1 + angleX1 + SkyboxModelHosek.albedoCnt * elevCnt, turbY1)
+        val a2t1b1B = colorMap.getCvec(albX1 + angleX2 + SkyboxModelHosek.albedoCnt * elevCnt, turbY1)
+        val a1t2b1B = colorMap.getCvec(albX1 + angleX1 + SkyboxModelHosek.albedoCnt * elevCnt, turbY2)
+        val a2t2b1B = colorMap.getCvec(albX1 + angleX2 + SkyboxModelHosek.albedoCnt * elevCnt, turbY2)
+        val a1t1b2B = colorMap.getCvec(albX2 + angleX1 + SkyboxModelHosek.albedoCnt * elevCnt, turbY1)
+        val a2t1b2B = colorMap.getCvec(albX2 + angleX2 + SkyboxModelHosek.albedoCnt * elevCnt, turbY1)
+        val a1t2b2B = colorMap.getCvec(albX2 + angleX1 + SkyboxModelHosek.albedoCnt * elevCnt, turbY2)
+        val a2t2b2B = colorMap.getCvec(albX2 + angleX2 + SkyboxModelHosek.albedoCnt * elevCnt, turbY2)
 
         // no srgblerp here to match the skybox shader's behaviour