Hi Werner
Nice work on a favorite! Color,can sometimes be a bit tricky and analysis can be confusing.
What I'm seeing is that the midtones in the blues are a bit strong(leaving a slight yellow cast) but the blues in the "highlights" are a bit week,so hence the not so satisfactory star color.
So,I believe If you corrected these you would come to a better over all balance.
I still enjoyed the view
