Nevermind I figured it out the hard way. I looked in the owners manual. Not the real one under the seat the online one. It said that the display must be showing "Current mileage", "Cruising range", or "Battery voltage". In order to change background color. Not "Average mileage", "Average speed", or "Total time". Because holding the right button down then will just reset them. Mine was set to "Total time" when I tried to change the color..