Milk Me A Rainbow

I can see a BIG trip to the produce market required for my latest milky experimentations. The lovely LRC ladies have just been filling me in on how to make my milk different colours. Already had yellow (colostrum), but wanting to add these to the spectrum:

Green-
Kelp
Spinach
Green Vegies
Wheatgrass

Pink-
Beetroot

Orange-
Carrots

Any other suggestions?

Also found out that one can ultrasound one's breasts and see all the ducts moving as you express milk. This is one to investigate. Anyone have access to an fancypants ultrasound machine and the technology to record it?