You should lighten up a bit with that food colouring Rob, you'll be showing us a red Korma before too long. 
Don't use a lot to be honest Frank. Often the colour in my efforts is down to the paprika in the mix powder, kashmiri chilli powder, and tomato puree. Some BIR recipes do, however, call for a touch of food colouring. Recently started using red in the tomato puree for the Ex hot range, for an added "fiery" appearance. A pinch of orange also looks nice in some dishes. I guess it works for some dishes and not for others. I made a keema saag earlier this week with no additional colouring and that looked mighty fine.
I do like a bit of red though

Rob
