Merge pull request #378 from Unity-Technologies/bugfix/1322032-create-shadowmesh-problem

Fixing 'Gen Shadow Obj' tool from ProBuilder window

Author: lopezt-unity

CHANGELOG.md

@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ### Bug Fixes
 
+- [case: 1322032] Fixing wrong ProBuilderMesh colors on domain reload when null.
 - [case: 1322150] Fixing torus and sphere UV generation when creating New Shape.
 - [case: 1320936] Fixing 'ProBuilderize' action creating empty submeshes.
 

Runtime/Core/ProBuilderMesh.cs

@@ -662,7 +662,7 @@ public IList<Color> colors
 
             set
             {
-                if (value == null)
+                if (value == null || value.Count() == 0)
                     m_Colors = null;
                 else if (value.Count() != vertexCount)
                     throw new ArgumentOutOfRangeException("value", "Array length must match vertex count.");