If anyone needs any of the Humbrol paints, let me know - they are pretty easy to get round here and nice and light so shipping to the US would be minimal.
I used Humbrol #5 (seems to be known as AD Grey over here) and it looks great.
Quick tip for easy colour accurate decals - just paint the decals whilst they are on the sheet. The paint doesn't adhere to the shiny backing sheet, they just need a little tidying up with a blade and hey presto, very tidy colour accurate decals. All that said, I still think frowns should be hand painted.
G