Carotenoids are red, orange, or yellow pigments found in many plants. usually we see these accessory pigments only in the fall. why aren't the red, orange, and yellow colors visible all year long? a) the carotenoids have much less energy than chlorophyll. b) the accessory pigments only absorb light; they do not reflect light. c) chlorophyll is more abundant in the leaves and masks the accessory pigments. d) plants only reflect wavelengths of visible light that represent the color green.