Board Thread:Theories and Rumors/@comment-26509603-20150619132817/@comment-27507964-20160217033514

Throughout Nya's outfits she has maroon (Nya's color is technically maroon and not red) from her first outfit even through her deepstone outfit. Maroon is just her color.

If you look back at the original episodes you can see various references to Nya becoming a dragon. One scene: the ninja fly off on their dragons and Nya says, "Sensei, why can't I have a dragon?" Sensei Wu says, "Your time will come Nya."

Nya's favorite color is blue, which also refers to her water powers.

Basically her color is maroon. That is just her thing.