How it works:

  • Pick a color from the tiles on the right to test
  • Press F-11 to go fullscreen (and F-11 again to revert back, you'll need to revert back in order to see your browser back button)
  • Use arrow (left & right) keys to cycle
  • Remember to use BACK BUTTON to return to homescreen, alt-left arrow will not work when you are in a background

Example: (small yellow dot in left corner)