I was on the fence on doing that. I asked my buddy who was helping me. He was super freaked out about doing it b/c you have a ticking clock on that stuff to get it done. He pushed me over the edge. I'm going to go back and paint it grey, but in hindsight I think we would've had time. It'll look fine with like colored paint, but as long as you dump out the batch and don't let it set, and have a friend cutting edges, etc, you'll be fine.