Fix icon color when disabled in VAB menu

Assets/Shaders/DecalFeatureBumped.shader

@@ -8,13 +8,14 @@ Shader "ConformalDecals/Feature/Bumped"
 		
 	    _Cutoff ("Alpha cutoff", Range(0,1)) = 0.5
 		_DecalOpacity("Opacity", Range(0,1) ) = 1
-		_Color("Background Color", Color) = (0.9,0.9,0.9,0.7)
+		_Background("Background Color", Color) = (0.9,0.9,0.9,0.7)
 	        
         [Enum(UnityEngine.Rendering.CullMode)] _Cull ("Cull", int) = 2
         [Toggle(DECAL_PREVIEW)] _Preview ("Preview", int) = 0
 		
 		[Header(Effects)]
 		    [PerRendererData]_Opacity("_Opacity", Range(0,1) ) = 1
+		    [PerRendererData]_Color("_Color", Color) = (1,1,1,1)
 			[PerRendererData]_RimFalloff("_RimFalloff", Range(0.01,5) ) = 0.1
 			[PerRendererData]_RimColor("_RimColor", Color) = (0,0,0,0)
 			[PerRendererData]_UnderwaterFogFactor ("Underwater Fog Factor", Range(0,1)) = 0

Assets/Shaders/DecalPaint.shader

@@ -11,13 +11,14 @@ Shader "ConformalDecals/Paint/Diffuse"
 	
 	    _Cutoff ("Alpha cutoff", Range(0,1)) = 0.5
 		_DecalOpacity("Opacity", Range(0,1) ) = 1
-		_Color("Background Color", Color) = (0.9,0.9,0.9,0.7)
+		_Background("Background Color", Color) = (0.9,0.9,0.9,0.7)
 		
         [Enum(UnityEngine.Rendering.CullMode)] _Cull ("Cull", int) = 2
         [Toggle(DECAL_PREVIEW)] _Preview ("Preview", int) = 0
 
 		[Header(Effects)]
 		    [PerRendererData]_Opacity("_Opacity", Range(0,1) ) = 1
+		    [PerRendererData]_Color("_Color", Color) = (1,1,1,1)
 			[PerRendererData]_RimFalloff("_RimFalloff", Range(0.01,5) ) = 0.1
 			[PerRendererData]_RimColor("_RimColor", Color) = (0,0,0,0)
 			[PerRendererData]_UnderwaterFogFactor ("Underwater Fog Factor", Range(0,1)) = 0

Assets/Shaders/DecalPaintSpecular.shader

@@ -12,7 +12,7 @@ Shader "ConformalDecals/Paint/Specular"
 	
 	    _Cutoff ("Alpha cutoff", Range(0,1)) = 0.5
 		_DecalOpacity("Opacity", Range(0,1) ) = 1
-		_Color("Background Color", Color) = (0.9,0.9,0.9,0.7)
+		_Background("Background Color", Color) = (0.9,0.9,0.9,0.7)
 		
         [Header(Specularity)]
         _SpecColor ("_SpecColor", Color) = (0.25, 0.25, 0.25, 1)
@@ -22,7 +22,8 @@ Shader "ConformalDecals/Paint/Specular"
         [Toggle(DECAL_PREVIEW)] _Preview ("Preview", int) = 0
 		
 		[Header(Effects)]
-            [PerRendererData]_Opacity("_Opacity", Range(0,1) ) = 1
+		    [PerRendererData]_Opacity("_Opacity", Range(0,1) ) = 1
+		    [PerRendererData]_Color("_Color", Color) = (1,1,1,1)
 			[PerRendererData]_RimFalloff("_RimFalloff", Range(0.01,5) ) = 0.1
 			[PerRendererData]_RimColor("_RimColor", Color) = (0,0,0,0)
 			[PerRendererData]_UnderwaterFogFactor ("Underwater Fog Factor", Range(0,1)) = 0

Assets/Shaders/DecalsCommon.cginc

@@ -72,6 +72,7 @@ float3 _DecalTangent;
 float _Cutoff;
 float _DecalOpacity;
 float _Opacity;
+float4 _Background;
 
 inline void decalClipAlpha(float alpha) {
     #ifndef DECAL_PREVIEW 
@@ -239,9 +240,9 @@ fixed4 frag_forward(v2f IN) : SV_Target
     #ifdef DECAL_PREVIEW
         if (any(IN.uv_decal > 1) || any(IN.uv_decal < 0)) o.Alpha = 0;
 
-        o.Albedo = lerp(_Color.rgb, o.Albedo, o.Alpha);
+        o.Albedo = lerp(_Background.rgb, o.Albedo, o.Alpha) * _Color.rgb;
         o.Normal = lerp(float3(0,0,1), o.Normal, o.Alpha);
-        o.Gloss = lerp(_Color.a, o.Gloss, o.Alpha);
+        o.Gloss = lerp(_Background.a, o.Gloss, o.Alpha);
         o.Emission = lerp(0, o.Emission, o.Alpha);
         o.Alpha = _Opacity;
     #endif //DECAL_PREVIEW