LÖVE

This is a real neat idea. I've never heard of Conway's Game of Life before, but after reading about it, I was super facinated by the simple rules. It's fun to watch too!

Wikipedia for those wondering:
http://en.wikipedia.org/wiki/Conway%27s_Game_of_Life

I gave it a shot, and made a red team and a blue team. Rule 4 (Any dead cell with exactly three live neighbours becomes a live cell, as if by reproduction) was modified so that the new cell took on the colour of the majority of the 3 neighbour cells.
usage:
press 's' to advance by 1 generation
press 'r' or hold down 'space' to keep advancing generations
use the arrow keys to move the view around
press 'escape' to reset the game