Here is my 2 cents on the new color scheme.
I am getting older and like a lot of people I have to stare at a monitor at work, too.
My time using Sonar in the last 6-8 months has drastically dropped mostly because of eye fatigue.
With the new look in Sonar, I can sit here working for hours on end and my eyes are no where near as tired as they would be in 45 minutes worth of time with the old way Sonar looked. I have only been using Sonar since X1, so not sure how it looked before that.
In short, the new look rocks, in my opinion. And of course my opinion and $5 will buy you a can of soda.