Home » Tip of The Day » Change The Interface ColorChange The Interface Color July 27, 2015. Posted in: Tip Of The Day. In CS6 and newer, press Shift f1 to darken the interface or Shift f2 to lighten. « Previous Photoshop Tip: | Next Photoshop Tip: » Sign-up for the PTC Newsletter so that you'll never miss a tutorial!. Your Email Address: