a fresh aspen leaf in autumn on the ground. fall pigments in a leaf changing colors. leaf with every color - green, yellow, orange

anthocyanin aspen autumn background beautiful biology botany carotenoid changes chlorophyll close colorful colours defoliation dried environment fall fallen falling foliage green leaf leaves maple nature october orange outdoors pattern peaceful perfection purple red road season seasonal shedding tanin toned tree vibrant wallpaper warm yellow yellowed