This photograph is about a month old, we had such a mild autumn of warm sunny days and dry weather but now it seems like a distant memory. The leaf you're looking at belongs to a smoke bush and this is, apparently, how the fall color transforms it from a rich bright red to a to a beautiful golden brown. It puts me in mind of the coloration on insects, fish, bird and other animals where they are meant to imitate eyes and frighten off would-be predators.
Canon 1D Mark IV, Canon 100/f2.8L IS
100mm, f4, 1/1000 sec @ 320 ISO