Playing with the grapher

[Cloudee1]

Since I've got my fuse burning, I've decided to leave a trail of ashes in it's wake. Once you get passed the (y1 x1) format, y first. Everything seems relatively straight forward except... apparantly we can't draw white and it does't like drawing from the priority screen either, instead drawing from the control screen. Anyone else ever play with this? I really want white!