>>37030339>Blue is left out of the neat rock-paper-scissors name gameI fail to see why you think that.
Bulbasaur << Charmander << Squirtle << Bulbasaur
But what else can I say? Thematically Red vs Blue seems to be a more common symbolic "trope" for rivalry than Red vs Green, but well, I'm no Japanese, maybe culturally they did have their reasons to put it that way or maybe not and they did fucked up.
The point out of all of this, is that the girl had to have a color as name if the two boys were to have name colors as theirs.