On Fri, 23 Oct 2015 13:11:39 -0400, wrote:

On Thu, 22 Oct 2015 23:40:52 -0400, wrote:


LEDs?
Yes. White LEDs. The existence of blue LEDs and high-efficiency LEDs
quickly led to the development of the first white LED, which employed
a Y 3Al 5O 12:Ce, or "YAG", phosphor coating to mix down-converted
yellow light with blue to produce light that appears white.

Yellow is R/G
What happens to the color when you reduce the drive to the blue LED?
The colour temperature changes a bit untill the light goes out It is
only one LED - - -

Hence the problem for people who like the color shift when you dim an
incandescent.