diff --git a/src/Common/ColorPalette.ts b/src/Common/ColorPalette.ts
index 8333bc020..88d1e1fce 100644
--- a/src/Common/ColorPalette.ts
+++ b/src/Common/ColorPalette.ts
@@ -325,7 +325,7 @@ export class ColorMaterial
         if (this._ConceptualMaterial.has(key))
             return this._ConceptualMaterial.get(key);
 
-        let shaderParams = GetGoodShaderSimple(new Vector3().fromArray(this.GetColor(color).toArray()), side);
+        let shaderParams = GetGoodShaderSimple(new Vector3().fromArray(this.GetColor(color).toArray()), side, ColorMaterial.UseLogBuf);
         let mtl = new ShaderMaterial(shaderParams);
         this._ConceptualMaterial.set(key, mtl);
         return mtl;
diff --git a/src/GLSL/GoochShader.ts b/src/GLSL/GoochShader.ts
index 112bd7464..7dc31afb1 100644
--- a/src/GLSL/GoochShader.ts
+++ b/src/GLSL/GoochShader.ts
@@ -18,15 +18,15 @@ export function GetGoochShader()
     };
 }
 
-export function GetGoodShaderSimple(color: Vector3 = new Vector3, side = FrontSide): ShaderMaterialParameters
+export function GetGoodShaderSimple(color: Vector3 = new Vector3, side = FrontSide, logBuf = false): ShaderMaterialParameters
 {
     return {
         uniforms: {
             "SurfaceColor": { value: color }
         },
         //del_exp_start
-        vertexShader: require("./GoodchSimple.vs"),
-        fragmentShader: require("./GoodchSimple.fs"),
+        vertexShader: logBuf ? require("./GoodchSimpleLogBuf.vs") : require("./GoodchSimple.vs"),
+        fragmentShader: logBuf ? require("./GoodchSimpleLogBuf.fs") : require("./GoodchSimple.fs"),
         //del_exp_end
         side,
         polygonOffset: true,