Black, definitely.

definitely black! Heard Kaffe Fassett present on color recently and he said white dulls colors

Are you convinced yet? Black it should be. LOL

Black makes the colors pop!

I vote for the black~

BLACK! It's the "new" white, don't yah know! LOL

Both look great, but the black is so much more dramatic!

love your blocks with the black background.

In this case I vote for the black background.

Black, much more dramatic!