Nice try :P
Eh.... that wasn't an insult.
I'm not much of a programmer, but there could be a few improvements on this one. Frist, the sound was just plain annoying >< You could add a little more thought to it, like timing the game. Also, when you delete blocks, and a few are isolated on the side, those could be pulled over to the main body of blocks (get what I'm saying...?) to make it easier. I suck at these "remove the blocks" games, including Tetris, but... eh.... this one wasn't that good. 4/10, and 2/5. ^^; The blocks could've been bigger, too...
Or, if you had levels, it would've been more interesting. Like 1st level, 2 colors, 2nd level, 3 colors, etc... :P