If you are shooting RAW then you can set the whitebalance manually in photoshop.
I found this tutorial that may be relevant for you.
http://dgrin.smugmug.com/gallery/1111417
Although it does convert to monochrome, it shows post processing from an image taken in auto wb.
I found this tutorial that may be relevant for you.
http://dgrin.smugmug.com/gallery/1111417
Although it does convert to monochrome, it shows post processing from an image taken in auto wb.