Jeremy its starting to look fantastic. Id try maybe misting some well thinned down brown, 95%-5%, on. As there is definately a brown look to them. I think over the top of the ally colour it should work a treat.
Heres my SM.79, which has QB cowls on it. It shows the lines Bondo was on about,
and heres a goodun of the real deal,
I bought the 2 kits i needed so my devious plan is still on, just as soon as i get this crooked winged millstone from around my neck LOL,
...Guy