The Towerkote that I used on that 50" biplane that I referred to was Cub yellow. Don't know if it varies from color to color. I have used the red towerkote for trim also with good results. I wish I could use just one brand (Ultra)for everything but that doesn't work out. Today a club member dropped off a little electric he wants recovered with Hobby King covering. That will be new to me, but I have seen good results on some planes others have covered with the HK stuff. We'll see!