When Im on Multiplayer servers I can never see the colored signs, I can only see it if I look at the edge of a sign. I dont know if I messed up something from my video options or its just that Im using a Mac. Any suggestions please ask, thank you.
I'm not sure of the cause, but other Mac users are reporting the same issue. Try updating LWJGL and see if that helps. You may have to update it manually.
Stu
Stu