diff --git a/neofx/types.h b/neofx/types.h
index 8586545..7b46c55 100644
--- a/neofx/types.h
+++ b/neofx/types.h
@@ -6,9 +6,14 @@ typedef union _MATRIX {
 	float f[16];
 } MATRIX;
 
-typedef struct _VECTOR_VERTEX_ROTATION {
-	float x, y, z;
-} VECTOR, VERTEX, ROTATION;
+typedef union _VECTOR_VERTEX_ROTATION_COLOR {
+	struct {
+		float x, y, z;
+	};
+	struct {
+		float r, g, b;
+	};
+} VECTOR, VERTEX, ROTATION, COLOR;
 
 typedef struct _TEXCOORDS {
 	float s, t;