I suck at colours. Colouring stuff, picking colours, even just visualizing them in my head. Most often I don’t think of how a character might look in colour, so I’m usually disappointed with the results when I actually attempt that. I just can’t not see them as the nice monochrome, blue and white figures I’m accustomed to I guess.
And Nelly’s more of a peach colour than orange, but a small colour-related vocabulary is excusable in the FIniverse.