Status bar expanded: Custom header background and -button color, (1/2):

- Custom color for the header background
- Custom color for the header buttons:
  - Icon
  - Button pressed background, (uses icon color)
  - Clock/date pressed background, (uses clock/date text color)

- Change button normal background color to fully transparent,
  (if the header background color isn`t black,
   the button normal background is visible, which doesn`t looks nice)