Implement simple qix monster
Implement line erasing
Implement 4-way reflections for symmetry.
Make the screen bigger, and only draw 3 lines before startng to erase

since the erasing doesn't really erase, due (I think) to anti-aliasing.
Make lines slowly change colors
reflect 8-ways for more symmetry
Rotate the whole thing around randomly for more interesting displays
Change the screen size and the way the colors are calculated
Change screen size and offset qix to screen center and adjust color algorithm