Control of the ship is done with the [WASD] keys, shooting with the mouse, and the color of your ship can be switched by using the [space] bar (or the center mouse button, if you have one).
There's a good variety in the levels here. Some levels require frantic speed to outrun a laser, others are mazes requiring exploration and backtracking, and still others are enemy-heavy.
The throbbing electronic soundtrack has a good variety too, but unfortunately, there's no mute button. There's also no way to lower the quality, so if you don't have a top-of-the-line machine, you might notice lag during the more sprite heavy times, which are usually the times when you least want lag. Of course, since the game depends so much on color-blending, the color-blind will not be able to enjoy it. Also, be careful where you click, as clicking "more" at any point opens the game's Facebook page in a new tab, which you might find as irritating as I do.
With those caveats, it's certainly a fun little diversion. Now if only I could turn the slush outside my apartment some nice, cheery colors...