[Xplorguy]

Originally Posted by choneofakind

Incandescent bulbs make all colors of light. It appears white to us because that's how light works. Think of a lens as a color filter. It blocks all but the color you want.

With an incandescent bulb, a red lens filters all but the red light, making a bright red light for us to see.

LED's produce only a certain frequency (only one color at a time) of light. If you put a white LED behind a red lens, there's no red light coming through. The result is a pink-ish white color. However, a red LED behind a red lens makes a deep red color.

Thanks, Chris. You just saved me from myself because I was sorely tempted to order a white led instead of red. "Pinkish-White" would be unacceptable!