New awb_mode for raspberry pi NoIR cameras is now available to fix the pink hue of running auto white balance on the raspberry NoIR cameras. Myself I would call it greenworld, but it is definitely an improvement on the standard auto mode for NoIR cams.
in /boot/config.txt add the following line to end of file
awb_auto_is_greyworld=1
Looking at the sky through a Raspberry Pi