dude. we dont need more color variations. as Elven said we need more uniqe monsters.
anyway i think that monster color should be similar to monster's natural enviroment. So very odd colors just cant be used.
well, i gave it a try. didnt work, but thats OK, its justthat people want some temporary monsters to kill as well as more things to do in the game right now.
Couldn't we use the colour vaiations just to get something new in to the game. Then once the Artists have come up with something better we could use that. This isn't ideal, but it does keep things moving. Maybe reserve one colour as a WIP colour.