/command for changing channel chat color ?

[Drumstix42]

Hmm, most things in the chat window update when changed, but I'm not sure if color is one of them (at least not right away).

Try switching to a different chat tab, and then switch back, after changing the color to see if it updates. Otherwise, you would have to try the above suggestion, of changing the chat's channel number to a new one and then switching it back to possibly update it.