Thanks! The colours may indeed be a bit over-saturated, I'll see what I can do about it in the next update.
Nooooo it looks great as-is! :) IMO, the vibrancy of the colors works really well with the art style of the decor. If you make it more "realistic" looking, that'll draw attention to the stylistic approach of the scenery, and you won't gain anything. Keep as is, please, and focus on the actual content (routes etc), please!