2010 10 01 Ganondagan 003 September 25, 2015 1600 × 1200 The Mysteries of Fall Foliage Revealed Sassafras leaves changing color in Ganondagan State Historic Site. Xanthophylls and carotenoids are what make up the yellow and orange colors respectively and anthocyanins are responsible for the pink color seen in these leaves. Photo by Tom Hughes. Related