commit ddb0c98a44 (a long, long time ago) changed the
wall62_2 patch to a new version that was supposedly better. But
really it is much worse: the colors just look washed out and ugly.
Restore the original version of this patch from before the change.
I made these textures in the early days of the project and I'm pretty
sure the symbols came from an animation on a website I found. The
symbols are pretty generic alchemical symbols but it still bothers
me on the rare occasion that I see the textures used in a level.
Recreate them using some public domain imagery in their place.
