I'm pretty sure it was just on Super Smash Bros Melee and Brawl, just to add some charm to it, you know?
Eh? Well, I think on Melee, the idea was to purposely be off-colour so you think, "Hey, I'm-a grow real big now!" but... it's no big deal. I just miss the angry-eyed ones from Super Mario All-Stars. You don't see enough of them IMO.
Ohh yeah, now I recall. It was hard to remember because those ones had closed eyes. Thanks for reminding me!