Curate, connect, and discover
In the series where each turtle look so distinct from each other, it’s weird that Splinter calls them by colors. Even more so, Leo is a red slider. He has those prominent red markings on his face.
So why is he blue?
Rats, aside from being near sighted, are red-green colorblind. Specifically, red-weak/protanomoly color blind.
Donnie has purple markings, Mikey had orange markings. And Leo?
Well he looks blue to mutant rat man. 🥺
(Raph is probably “Red” because that’s the Hamato color)