The IG add KTC Egg Yellow to their Bhaji. I wasn't overly surprised but that was largely due to still trying to overcome the fact they added potato too.
But 'dissapointed' is definitely the word I would have used when I first found out years ago, that the likes of Tikka and Tandoori only look as good as they do because of colourings.
Personally, I don't think there is any need to add colouring to a bhaji. They are never around long enough to study.