ApplyStampToVertexColors ( const FDynamicMesh3* Mesh, const FDynamicMeshColorOverlay*..., TArray< FVector4f >& InitialVertex..., TArray< FVector4f >& StrokeVertexC..., const FSculptBrushStamp& Stamp, const TArray< int32 >& ElementIDs, TArray< FVector4f >& NewColorsOut )