@Goblin Wizard:
That does explain why the game was choking on the backups if I left them in the same folder as the originals. Don't we need to edit any include scripts though? I'll try this when i get back, gotta go eat.

@StarShatter:
You mean changing the colours on the existing textures so they stand out better? Up to you, but I don't really have a problem with the existing ones.