[NTG-context] setuptyping in MKIV

Hi, If I set option to empty in setuptyping, the output of \starttyping stoptyping is colored. \setuptyping[option=] \starttext \starttyping % This is a test \stoptyping \stoptext This works fine in MKII, but in MKIV the % is colored. The color goes away if I set option=none. I think this is a bug, but cannot figure out its cause. Aditya