Home » Tip of The Day » Quickly Access The Eyedropper ToolQuickly Access The Eyedropper Tool October 11, 2016. Posted in: Tip Of The Day. As you paint with the Brush tool you can press and hold the Alt (Mac: Option) key to turn it into the eyedropper tool to select a different color to paint with! « Previous Photoshop Tip: | Next Photoshop Tip: » Sign-up for the PTC Newsletter so that you'll never miss a tutorial!. Your Email Address: