[quote name='drone8888']They have different names, but I neither care, nor remember them.[/QUOTE]
pure white
graphite black
candy pink
turquoise blue (i'm guessing this is the green one you mentioned)
pokepark limited edition (the blue one)
and in july, japan gets the pokemon mew limited edition, which is a very light pink-silver color.
also, electric blue appears to be a bit lighter than the pokepark blue, which has a very deep, more royal blue color.
EDIT: while i'm keeping track of all the colors, might as well mention... there's also the *very* limited edition electroplankton DS... and in august (tentatively), there's going to be a red DS in japan to coincide with the release of jump superstars... any others variations that i'm missing?