This tree used to be red when I bought it. Like my other Japanese maple (Coral bark) it lost its original color. I understood that this might be either because of the stress induced by replanting the trees and changing the environment (nursery vs open space) or due to soil conditions (water, nutrients oxygen-lack of it)
I decided to wait to see if the come back to the original colors. Can't say that they are but I am not seeing an aggravation of the situation so I decided to wait till next spring when I will help the trees with some stimulants.
In the mean time I noticed that the Shaina maple has some problems as you can see below. This is mostly on the part of the tree that is more exposed to sun. This morning when after about two months of being busy with other projects I looked at the tree and I noticed the above. Another thing that I should mention was two very colorful bugs which I removed before thinking I should take a picture
The shape of the bugs was like this (the vivid colors, there was no brown on those bugs))
But the colors were more like this