FastLED color temperature / WWA strip support

**Describe the problem you have/What new integration you would like**

- Be able to set color temperature instead of RGB values for RGB LED chip

- Be able to control WWA LED chip (white+ warm white + amber) in the same way the cwww light platform do to control SK6812 chip for instance (basically the same as ws2812) that have the 3 white channel instead of 3 color channel.

**Please describe your use case for this integration and alternatives you've tried:**

- To control the RGB LED strip with temperatures values I'm using a conversion table + node-red.

- For the SK6812 I'm using it as a regular RGB LED strip. Just mapping the RGB value to the corresponding temperature :

```
color1800k = {cw: 0, ww: 0, a: 255}
color3000k = {cw: 0, ww: 255, a: 0}
color7000k = {cw: 255, ww: 0, a: 0}
```
_cw = cold white, ww = warm white, a = amber_

**Additional context**

My final goal with those SK6812 is to be able to simulate indoor sunlight.

I'm actually using node-red + Arduino sketch + MQTT to achieve that, but it's really messy and over complicated.

[](http://www.youtube.com/watch?v=D_Tr3xCa_PM "Video Title")
_SK6812 Timelaps_

I'm checking the actual date / location with a random API on internet to get the exact time of sunrise, sunset, solarnoon, twilight begin / end, then I'm fixing some arbitrary temperatures for those events, and I'm just sending every minute via MQTT a different light temperature, with a nice and soft transition during the day.

But I'm looking for a better way to implement that since again my actual setup is really messy and hard to deploy / maintain.


maybe in a future release we can have a light platform that automatically light up with an automatically calculated temperature according to a set location and timezone, that would be really great, but until then, being able to just set temperature on RGB LED and control WWA LED would be really helpful.

The request mentions an Arduino sketch, MQTT, and a Node-RED flow, but names no repository files or tests. Review those existing integration points first and compare them with the requested RGB color-temperature and WWA controls. Done means the requested temperature control and three-channel white-strip support work without the described external conversion setup.

Written by the indexing model from the issue text.