I believe this crash is for you. I was browsing the items added and noticed grim in the stacktrace

http://pastebin.com/Kv0xene8

Just tested again and it seems to be happening on the 3rd page of JEI, I'm guessing one of the items after the walls.

similar problem. crashed when opening part of the book.
http://pastebin.com/irKzfUyB

@awkwaRdcaRRot Yeah seems to something with the new way coloring works. I'll take a look at this tomorrow.

@JosEffigy This seems to be a different issue.

It happened to me while I was browsing through the decor tab.

Were you guys using a modpack because I am unable to recreate this and I don't really want to download each mod manually.

I was using a custom modpack that I made. I can try adding your mod to like the all mod pack when I get home and see if I get the same error. There is a lot of crossover with mine and that one.

Okay actually I just downloaded that I tried it out. Gave me the same error so you don't need to do that.