These work well on white LEDs. However be aware that they will cause any "double shot" keycaps or similar to stick. I have the CODE keyboard, and the keycaps it comes with have very thin walls, so these work fine. However I had ordered some doubleshot shinethrough keycaps, with thicker walls, and they make my keys stick either intermittently or absolutely. I might just have to go bac kto white LEDs or buy new switches.