Why do people get so het up on white balance - it is absolutely meaningless in your camera if you are shooting RAW and why wouldn't you be?
I leave my camera on auto white balance just so the thumbnails are of a reasonable colour, then when I take the raw file into Camera Raw, use the gray balance dropper (upper left) to neutralize the image. If you happen to have some tones that are supposed to be neutral then you are laughing - this weekend I was shooting white lab coats. More often you won't have a neutral colour. In that case I will do one of two things, play with the colour temperature slider (top right) or I will use the gray balance dropper on the most neutral colour I can find, then make small adjustments to the colour temperature sliders (there are two, a main one and a cyan/magenta one).
Once in Photoshop, one can do an Auto Colour in the Image menu or do a curves adjustment layer, using the gray balance dropper once again on the most neutral colour. Here I can use the layer opacity slider to tone back the colour effect and often this is just exactly what is needed to get the colour adjustment where I want it.
There are many other ways to colour balance - this is simply the method that works for me.