Yes, C.Fn3 Custom Controls (where you can change the functions of various buttons). The joystick button, 2nd from the bottom on the right side....set to Direct AF point selection.
When i click on the WB button and dial it to color temperature (K). I can't figure out how to change the temperature. 70-642
If I go directly into the camera menu and select white balance, the top dial can be used to change the temperature.