If I may ask, how do you determine which Senshi gets which colors?
A mix of "I know there are some people in the fandom who enjoy this interpretation" and "the colors on that flag look good with her uniform."
Well, one commentor has already mentioned that Mars seems asexual (manga-universe) and I can totally see Venus flying that particular flag.
The rest seem like they might be harder to place. Not sure about Mercury, but Jupiter is straight, Saturn is...uncommitted, AFAIK, Neptune and Uranus are Neptune and Uranus (and I think you covered their colors already), and finally Pluto is straight, unless I read her incorrectly (she seems to have a thing for Mamorou, at least in the manga).
You have a pretty but difficult task ahead, it seems.
Yeah, once you explain away the Casablanca Memories side story, it's easy to read manga Mars as asexual.
Fans are very inventive, and there's a whole lot of flags out there! I already have plans for almost everyone.
Yeah she seems pretty asexual, at least in the manga
I like the idea behind this! The piece itself looks nice too.