Warning: Shoots pure, condensed color. May destroy your eyes because your optic nerves will not be able to handle this much color. It's like a rainbow, but 1000 times more colorful. I am warning you. Leprechauns don't hide pots of gold under this cannon, pots of gold hide leprechauns here. It's like a unicorn bred with a chameleon, and the chameleon got shot out of a cannon. The song is Tobu - Colors, since it's the only song that comes close to being colorful enough.
I made this by selecting lots of colors, then drawing a cannon, and then going absoultely berserk with the colors. It's colorful.