Making the Koopalings alts in Mario Kart like Yoshi's colours is good for creation threads where characters are added one by one, but not really reasonable for an actual game - it could be done, and has been done in Smash, but probably isn't preferable to animating and sizing each one uniquely in a game where characters are primarily cosmetic as is
Yes, up until age 10 I did this with everything that had .EXE at the end