For me, the autumnal season has passed and I am in the winter of my discontent.
I think the color change comes from change in daylight primarily. Temp also, but even in places like yours, and SoCal, leaves change color. Chlorophyll goes into remission and the other colors become dominant. I guess someone needs to keep an eye on me.....
Fall is my favorite time of year, also.
You've taken the idea of a selfie to a new level!
Eye eye matey.
"Oh, it's a long, long way, from May to December, and the days grow cold, as you reach September....."