rename background color property to make KSP happy

Assets/Shaders/DecalFeatureBumped.shader

@@ -8,10 +8,10 @@ Shader "ConformalDecals/Feature/Bumped"
 		
 	    _Cutoff ("Alpha cutoff", Range(0,1)) = 0.5
 		_DecalOpacity("Opacity", Range(0,1) ) = 1
-		_Background("Background Color", Color) = (0.9,0.9,0.9,0.7)
+		_Color("Background Color", Color) = (0.9,0.9,0.9,0.7)
 	        
-        [Enum(UnityEngine.Rendering.CullMode)] _Cull ("Cull", Float) = 0
-        [Toggle(DECAL_PREVIEW)] _Preview ("Preview", Float) = 0
+        [Enum(UnityEngine.Rendering.CullMode)] _Cull ("Cull", int) = 2
+        [Toggle(DECAL_PREVIEW)] _Preview ("Preview", int) = 0
 		
 		[Header(Effects)]
 		    [PerRendererData]_Opacity("_Opacity", Range(0,1) ) = 1

Assets/Shaders/DecalPaint.shader

@@ -11,10 +11,10 @@ Shader "ConformalDecals/Paint/Diffuse"
 	
 	    _Cutoff ("Alpha cutoff", Range(0,1)) = 0.5
 		_DecalOpacity("Opacity", Range(0,1) ) = 1
-		_Background("Background Color", Color) = (0.9,0.9,0.9,0.7)
+		_Color("Background Color", Color) = (0.9,0.9,0.9,0.7)
 		
-        [Enum(UnityEngine.Rendering.CullMode)] _Cull ("Cull", Float) = 0
-        [Toggle(DECAL_PREVIEW)] _Preview ("Preview", Float) = 0
+        [Enum(UnityEngine.Rendering.CullMode)] _Cull ("Cull", int) = 2
+        [Toggle(DECAL_PREVIEW)] _Preview ("Preview", int) = 0
 
 		[Header(Effects)]
 		    [PerRendererData]_Opacity("_Opacity", Range(0,1) ) = 1

Assets/Shaders/DecalPaintSpecular.shader

@@ -12,17 +12,17 @@ Shader "ConformalDecals/Paint/Specular"
 	
 	    _Cutoff ("Alpha cutoff", Range(0,1)) = 0.5
 		_DecalOpacity("Opacity", Range(0,1) ) = 1
-		_Background("Background Color", Color) = (0.9,0.9,0.9,0.7)
+		_Color("Background Color", Color) = (0.9,0.9,0.9,0.7)
 		
         [Header(Specularity)]
         _SpecColor ("_SpecColor", Color) = (0.25, 0.25, 0.25, 1)
         _Shininess ("Shininess", Range (0.03, 10)) = 0.3
         
-        [Enum(UnityEngine.Rendering.CullMode)] _Cull ("Cull", Float) = 0
-        [Toggle(DECAL_PREVIEW)] _Preview ("Preview", Float) = 0
+        [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]_Opacity("_Opacity", Range(0,1) ) = 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

@@ -71,9 +71,7 @@ float3 _DecalTangent;
 
 float _Cutoff;
 float _DecalOpacity;
-
 float _Opacity;
-float4 _Background;
 
 inline void decalClipAlpha(float alpha) {
     #ifndef DECAL_PREVIEW 
@@ -223,9 +221,9 @@ fixed4 frag_forward(v2f IN) : SV_Target
     surf(i, o);
    
     #ifdef DECAL_PREVIEW
-        o.Albedo = lerp(_Background.rgb,o.Albedo, o.Alpha);
+        o.Albedo = lerp(_Color.rgb,o.Albedo, o.Alpha);
         o.Normal = lerp(float3(0,0,1), o.Normal, o.Alpha);
-        o.Gloss = lerp(_Background.a, o.Gloss, o.Alpha);
+        o.Gloss = lerp(_Color.a, o.Gloss, o.Alpha);
         o.Emission = lerp(0, o.Emission, o.Alpha);
         o.Alpha = _Opacity;
     #endif //DECAL_PREVIEW