Setting the background color of Sonar's piano rolling shutter window

[happy816]

I am unable to individually set the color of Sonar's piano rolling shutter window background, and can only obtain a light colored rolling shutter window background by changing the theme color，

Another issue is that when selecting tracks, the background color of the left channel bar cannot change color with the selected track like Bandlab Cakewalk, only a narrow color distinction below.
Did I find the option to set it up?

 

[happy816]

Did I not find the location of the settings options?

[happy816]

Who can help me? Thank you