Have a look at the e-numbers
WIKI.
Very enlightening, turmeric is E100, E101 is vitamin b2, vitamin c is E300, annato and beetroot are also listed, in fact it's probably easier to list things that aren't E numbers.
(E700 through to E717 are anti-biotics, so if they are listed on the back of your frozen chicken packs probably best avoided!)
E110, Sunset Yellow, is banned and a lot of the red colours are suspect so could be worth checking just what you've got in the cupboard, if you're like me some of the little tubs you've got will be years old.
Regards
CoR