I have had a huge range of colors throughout the past few months from my birds (but mostly OAC 123 to 151, occasionally one will throw a 179). I think it has to do with genetics, feed, amount of sunlight, and who knows what else lol (maybe we should try singing to them to see if it makes a difference heehee). I think Mr. C hit it on the head with the dye pack idea (that at the start of the cycle the largest amount of brown was available so most eggs would be their greenest). Crazy part is that until Lucy went broody there was no pause in her laying, so maybe she went through multiple cycles creating the different colors along the way.