this is a super jank solution but it worked (shrug)

src/shaders/actors.frag

@@ -30,4 +30,5 @@ void main() {
     vec4 selvec = vec4(0.0, 0.0, 0.0, (alpha > bayerThreshold) ? 1.0 : 0.0);
 
     gl_FragColor = inColor * boolean.yyyx + selvec;
+    gl_FragColor = inColor;
 }

src/shaders/demultiply.frag

@@ -0,0 +1,17 @@
+#version 130
+#ifdef GL_ES
+precision mediump float;
+#endif
+
+varying vec4 v_color;
+varying vec2 v_texCoords;
+uniform sampler2D u_texture;
+
+vec2 boolean = vec2(0.0, 1.0);
+
+void main() {
+    vec4 inColor = v_color * (texture2D(u_texture, v_texCoords));
+
+    vec4 divided = inColor / pow(inColor.aaaa, vec4(2.0));
+    gl_FragColor = divided * boolean.yyyx + inColor * boolean.xxxy;
+}