I guess I do like the idea of the light getting softer as it dims be
that "romantic" or just a less harsh color.
I am not convinced a CFL or a "smart" LED actually uses a
significantly lower current when dimmed either. That is particularly
true of the CFL since the ballast load is still there.
Depending on the type, I am not convinced that traditional dimmers
designed for incandescent lights significantly reduce the amount of
power being consumed either. Some are phase angled SCRs, some are zero
crossing SCRs and some are nothing but rheostats.
I realize the Cree isn't color changing. Never said it was. I said it
is available in two color temperatures, one being a bright white, the
other a warmer temp.
Programmable color fixtures are becoming very popular however in home
construction and retrofits. A guy I know is a master electrician and
his whole business is focused on light programmable lighting, often
controlled by whole home entertainment systems or even iPads. People
like the idea of changing the static lighting "ambiance" in a room or
even have the lights generating a mult-color light show to accompany
music or other audio-visual effects.