The symbols on the THMPR are all just concept art. I want to have a decal system in the game and you can put what you want. Including the Stars and Stripes. I'm also looking at classic pinup art for frames, for example.
I'm not a PC person, so we're not going to tip toe around and try not to offend anyone with a decal. Instead, I'm looking at options where customers can simply "mute the look" of anything they find offends them. So you could turn off decals for anything you don't like seeing, for example, and you will get decal-less version of a frame. Same for certain outfits on characters, which would just set that character to its default look. Personally I believe such filtering should be under user control and not game censorship.