Background fixed :D

Luke and Ben R put me into what was happening in the draw function, I was still using Funatti's palette code which was riding over my background (which was only being drawn in the first frame). Ben suggested I use image in the loop or erase it all together and let the sketch build up. I did not want the latter at all, so played around with image in the for loop, and managed to get the background to draw every frame :)