Plains option for missing biome tiles

[NistCraft]

I have no idea if this would be possible, cast me out if it isnt. However, for those of us who love the mod, but also run extensive biome mods. An option in the config to change all ??? textures to an existing one would be really nice. For example, it could be missing texture= default or plains. It would be an optional solution if you cant make a texture pack for them all.

[sisby-folk]

I'll add a plains option to the config - letting it be totally arbitrary is best done by just texture pack replacing the ??? texture data.