a) uboats had red, green, and yellow filters for both scopes. The first filter mod I made had a green lens. Then I switched to red because it made the water look redish. You can make them pink if you want to
Whatever looks best.
b) I don't see what else I can squeeze in this. If you have any suggestions, by all means, tell me. I'd rather spend time to finish the SH4 interface than finding things to add to Mikhayl's excelent layout.