Use the keys to take a cruise through color space. Q W E A D Z X C You can think of color as a 4 dimensional space. The 4 dimensions of color space are supposed to be hue, saturation, value, and alpha, but Scratch's graphics effects kind of merge saturation and value in their own way that they call "brightness", so that's why one of the directions here is randomly the pixelate effect xD If saturation and value were separate graphics effects though, this project would let you "travel" to every color that your computer could display!
The music is "Underwater Dive" from Pokemon Omega Ruby & Alpha Sapphire