It looks fairly well done. I prefer the random bag method of piece generation. Also, the movement of falling pieces is a little touchy--sideways movement can sometimes generate a double movement and sometimes no movement. However, if you play around with the game on meatbrick.com a bit longer, you'll see there is more to it than a Tetris clone.

Kongregate fundamentally isn't in game development--it's simply another form of distributing UGC. I'd rather be in the business of creating great games.

Thanks for the comment on the color scheme. I've altered it slightly to be less headache-inducing.

They're Xbox colors.