This is a lights out program I wrote for fun: fun to program, and fun to play.
The goal of the game is to turn the lights (white squares) off (black squares). This is accomplished by clicking on the squares, which toggles that square and the vertically and horizontally adjacent squares. If a square is on the edge or in a corner, it only toggles squares that are available to be toggled; it doesn't wrap around the board.
At the moment, the program supports changing the color of the squares; they can be either solid color or gradients.
For more information on the game, visit http://en.wikipedia.org/wiki/Lights_Out_%28game%29