I've come to realize I'd love to be able to "draw" interesting shapes on the ground in dungeons. As I've taught myself how to use the tile editor, I'm looking to do something else interesting with the concept. I know most dungeon drawing uses CSet 2 with its own unique palette, but there are a few black spaces in that CSet. Is it safe to change the color of one of those squares for CSet 2 so I can make unique dungeon tiles that form pictures? Which columns can I change?