Why? You can barely see it anyway after 10 seconds from last key pressed? You can experiment with the default display Wallpaper, Screen Savers, contrast, etc in MENU/SETTINGS/DISPLAY. I found setting both Screen Saver and Wallpaper to NONE gives the best display. Contrast setting didn't seem to make a lot of difference, but the COLOR scheme you choose does, especially against the white background display you get when Wallpaper is set to NONE.