Thank you for this feedback. Atm, I am making all the assets myself and I intend to put the main character into the CGs for a more customized experience, hence why the options are limited right now -- this is why the maker was not as extensive as I wanted it to be. Inclusivity is important to me, though, so I am taking this into consideration and see what I can implement without the code and the assets becoming cumbersome.
Just as a bit of extra input, I think one medium-olive tone would be all that's missing to not over-extend yourself if adding any further options would be too hard on you and you needed to set a hard limit as an indie dev, but I know as the game develops you'll correct/add the skin tones (and hairstyles) as you're able! I'm excited to see how everything progresses and thank you for the hard work!!