Thanks for uploading larger images of the fighters! I noticed one was larger than MediaWiki's default maximum area, so I increased the maximum area to 2^24 pixels. That should allow you to upload 4096x4096 images. Let me know if that's still not big enough. Gomtuu (talk) 14:26, 18 June 2017 (EDT)
I'm not sure what you're referring to as far as colors used on the official website (can you send a link)
But the colors on the wiki are kind of arbitrary and all over the place whether they refer to breastplate color, mask color, hair color, ARM color etc. The only in game reference we have for the game's intent of what color corresponds to each costume is the color of the t-shirts that the audience wears. The audiences changes their tshirt color along with your palette swap...
Looking again Ninjara's default is def green, and his last color is a light green or lime as it was before. It's not navy, even if the majority of his costume is literally Navy, from a character design standpoint his main color motif is Green.