Green: broccoli, not yet; artichoke, too strong for me now! green beans, limit intake; green peas, yes
Red: red meat, yes but not too often; apples, yes; tomato, yes; red wine, yes but not before day four of week one, limit volumes to two glasses; beetroot, don't really like it; strawberry or raspberry yoghurt, yes (with muesli at breakfast); salmon and other red fish, yes.
Yellow: corn on the cob, yes; banana, yes; hard cheese, yes (see red wine, above); potatoes, yes (baked, boiled, french fries etc); cheesecake, yes!
I usually mix the colours, but have also had monochrome meals at some point, like white fish and rice...