Autumn colors are nature's reminder that change is the only thing that is permanent. Deciduous means "tending to fall off" 🍃. Deciduous plants shed their leaves in autumn because the high costs involved in their maintanace would outweigh the benefits from photosynthesis during the winter period of low light and cold temperatures. So they lose their leaves to conserve water and to better survive harsh winter cobditions. In a more general sense , deciduous means "falling away after its purpose is finished". Sometimes we have to give up on something in order to get something.