The source is in with the main installer

er main exe... no installer for this one just a zip with all the necessary files

It took me a few rounds to determine how the game worked exactly; specifically that you had to go back to gray to pick up a new color. You may want to add a comment in instructions that you have to go back to gray to get a new color (you stated how to make the player turn gray, but not why).

Two suggestions for the future:
1) The controls are stiff, in that if I was quickly tapping the arrow keys, most weren't registering. Since there is no animation, I should be able to move from one block to the next as fast as I can press the key.
2) As you stated, there was no winning or losing due to time constraints. As a quick way to add a game over condition, you could add a quota for each level and either make the board small enough or congested enough that the player can't just get all of one color in one shot.

I like the Idea, but it runs incredibly slow on my computer(windows xp), Good job.

congratulations to your first completed LD!
i think the game would feel better if you could move the player faster. also, sometimes the key-pressed seem to not be detected and he game seem to hang for a second or so...

It's a good start. It does need some winning and losing, but you were working on that? Maybe some more sound and effects when you collect a bonus?