Change color of the bar with a button

Hi, I can’t seem to find any way to change background color of the bar with the button. I don’t want to change color of background of the whole page. Only the small bar. In addition is it possible to move the button freely? I don’t want in that exact position but I can’t move with it.

• This topic was modified 2 years, 6 months ago by Jan Dembowski.

The page I need help with: [log in to see the link]