User blog comment:ACWeapons/RWBY Genderbend Conversion Chart/@comment-26397825-20151223235239/@comment-26397825-20151224000510

Rumenmeans 'Ruddy, red-cheeked' in Bulgarian and Macedonian.

Just because she doesn't wear black doesn't mean you can't give her the name. And besides, her male counterpart may decide on making some of the silver parts of her armour black, so it's not made of totally feminine colours. (Which, I know blue, white and silver are not considered feminine colours, and pink can be worn by guys as well. But the combination of pastel colours is feminine, as light colours are seen as for females by the majority of people. A bit of black could ground it, and give it a slightly more masculine feel.)