More or less, they ate the same apparently. Though I find that difficult to accept because Red or yellow are naturally sweeter than green, so in theory at least should have more Kcals but if you look them up, they don't.
My mum (has T1 diabetes) always says red have the least amount of sugar per 100g, but I don't know if that's true or not. I don't really mind, I like all colours. I think they all taste similar enough.