Hi how are things. I'm using the dentist 4 template. When I want to change the header to the classic one, it remains transparent.
Please, go to Betheme -> Theme options -> Global -> General and see if you do not have the enabled Top Bar with menu transparency set.
Thank you, one question more
Where i change this color button?
It is the Action button. Its color can be changed in Betheme -> Theme options -> Global -> Buttons.