Just a clarification for anyone who might not be aware.
Getting WB right in camera is really only a concern when shooting sooc jpegs because the camera's WB setting is baked into the camera's internal raw conversion to jpeg.
If shooting raw the camera's WB setting is stored in the raw file's exif data and not applied to the raw data. The raw converter app reads the WB setting from the exif and applies it during the converter's conversion of the raw data to rgb data on the initial rendering of the raw data. The user can then adjust the WB sliders in the raw converter app to whatever they like. This gives much more control of the final WB for the image than the fixed WB settings in camera.