The green blends in with the blocks, so no real separation, the white is too light, again, no definition of blocks. I'm with the others, you need a dark color to really separate the blocks and make all of them shine. A purple or even a very dark green - something to show off the four blocks, instead of having them all seem to meld together. Then use the light green as an outer border, to lighten it up and make the whole thing pop against the dark purple wall.
P.S. I love the idea of a dark purple wall - you should let your inner colorist out to play more often!
Last edited by MdmSew'n'Sew; 02-07-2012 at 06:49 AM.