R: Great transparent boxes and font, interesting transparent background. Pro: icons, in particular text boxes. Gradient also works very well to create order/flow. Free cross-platform UI kit for Photoshop and Sketch
Career in UXD: Thrilled by designing products or services that people will love and use? Here you get an idea of what it takes to make a career in UXD (User Experience Design) and how much you'll earn on average.