Logisys has the Silver Streamline and the Black Streamline keyboards. They are silent, but the keys are shaped like those on a laptop. I had the silver streamline for about three months and the backlight died and Logisys was too much of a hassle for a return
Saitek though has a good backlit keyboard. I believe the keys are silent on it. I believe you can change the backlight color from blue to green and to purple, though I'm not totally positive.