Red and Green Points on One Japanese Maple Leaf

While enjoying a fall afternoon with my daughter in Arisugawa Park, I happened across a Japanese Maples withe leaves that were just starting to turn from green to shades of orange and red. However, there were several leaves on this tree that appeared to be changing colors one point at a time. Very curious and very unusual. I had never seen a leaf do this before.

Nikon D600 with Nikon 105mm f/2.8G ED-IF AF-S VR Micro-Nikkor Lens f5.6, ISO 100, 1/40 sec.

It was strange, since I had never seen one like this before; however, there were several more on this tree. Here's another one...

Nikon D600 with Nikon 105mm f/2.8G ED-IF AF-S VR Micro-Nikkor Lens f4.0, ISO 100, 1/80 sec.