My BR comb/waddle colors change. Sometimes its bright red sometimes its yellow. When she jumped in my lap this morning it was red and as she napped on my belly (her favorite spot) I looked down and it was yellow. I don't notice it with my rir - hers always seem bright red. The BR isn't laying yet but started squating last week-idk if that matters. She seems otherwise healthy so I'm guessing it has to do with heart rate/blood flow. Does anyone have a real answer??