Red color unique to this season that I realized during commuting
It is the leaves of cherry blossoms in Kameibashi Park on the Tsukiji River.
In particular, one cherry leaf is red.
Yellow of ginkgo on Showa-dori
On Showa-dori, not all ginkgo trees are still yellowing.
In the first place, the leaves look green because they contain "chlorophyll", and when the sunshine hours 
are shorter in autumn, the chlorophyll is broken down.
And the red color of the leaves is derived from the pigment "Anthocyan", and the anthocyan does not exist in the leaves from spring to summer, but is newly created during the aging process ().
In addition, the yellow color of the leaves is the pigment "carotenoid", and carotenoid pigment-based xantfills are contained in the leaves since the young leaves, but cannot be seen from spring to summer, and the chlorophyll of the leaves is broken down 
in autumn. It seems to be noticeable.
Hey~
And the green willow at Ginza Yanagi-dori St.
Because of this season, I am grateful that this green color is kept as good as the cold
.
That's why it was red, yellow, and green unique to this season.
By the way, it is the situation as of December 4th.
