Randy, yes its a bit late, the red part has been painted, and the white part has 2 coats on it now. I was thinking of trying your idea, I had the same idea, but I thought that the lightweight spackle and water based primer would do the trick.
Tonight is another session in the shop, and, hopefully, I will have time to upload the pictures from the cmaera, wash them through photoshop and post them here.