ORIGINAL: Prop Nut
I forget the color name but it is the "harsh" opaque white. I will also be painting it.
It doesn't look so opaque on the wings of your Tripe. Solartex offers "natural" and "white." The "white" (which is what I used) completely hides all structure. It's really really opaque. The natural is also white but reveals structures. This is similar to the "antique" vs. "linen" comparison where the Antique is translucent and the Linen fully opaque. My own feeling is that the fully opaque solartexes are really only suitable if they are going to be painted. In fact, I'm thinking that from now on, I may ONLY use natural on ALL models and then treat the fabric to get the colors I want.
What color scheme are you thinking of?
Viel Gluck beim Erstflug!