Black Aluminum + RGB backlight. With a beautiful black anodized aluminum enclosure, RGB backlighting, and a sleek ultra thin design, we've created a PC keyboard that epitomizes style & quality. Spectrum Color Dial. The Color Dial gives you a continuous spectrum of colors, by simply turning the dial... For White, turn all the way to the left, or all the way to the right - passing through a rainbow of colors in between. It's the ultimate in simplicity & flexibility. Nightly whites. Too much Blue-light exposure at night is known to negatively impact your melatonin levels. This can shift your body's natural time clock - leading to poor sleep and various other health issues. The backlight on this keyboard was SPECIFICALLY designed to address that problem... Turning the Color Dial all the way to the left or right gets you White (which is 100% Red, Green, and Blue). BUT when you turn the Dial back, it preferentially reduces the BLUE component of White, resulting in softer Whites, that are more Yellow (and better at night). Dial it back a little further, and you have 100% Yellow (0% Blue). Dial it back further still, and you get 100% Red - which is the color that least impacts sleep patterns.