Radial Gradient Kaleidoscopic Image

I wrote a program for fun that draws radial gradients in real-time and lets the user drag it around a window. (There was no real "purpose" behind the program other than to see if I could write it.) This is a kaleidoscopic view of that program with a red (which appears as orange-red in the image) radial gradient (a fancy way to say "fuzzy red and circular blob") on a black background with a white grid.

Done