Yes - Shark mouths do count
When I mentioned the colors on noses and tails, they have to be either or both. Think Tuskegee Red Tails or the Blue Nosed Bastards of Bodney P-51 Mustangs.
As for twin engine fighters/bombers - P-38 Lightnings for example as long as they have color on cowlings/spinners/noses and/or tails. Even shark mouths qualifies. Even if they have checkered cowlings or tails - Invasion stripes alone don't qualify unless they have colored cowlings or tails. I have seen some bombers with striped tails.
Here's are a few examples:






Well, you get the idea..... There are quite a few out there.



