Adding predefined colors to RGB lighting control tiles.

A useful feature would be the ability to add a few user-defined colors to the tile; with just a Hue slider, it is impossible to create a true white color using all three (R, G, and B) LEDs. I use WS2812B LEDs for desk lighting and frequently use a color that mimics warm white. When I need full brightness, I switch to pure white. Currently, every time I want to return to my preset color after changing it, I have to open Home Assistant on my phone or in a browser. Even on small screens, there is plenty of space below the brightness slider to add "circles" representing specific colors. Setting custom colors would be optional during tile configuration. I was thinking of adding a "+" button that opens a dialog box for entering R, G, and B values; once confirmed, the color circle would automatically appear, centered beneath the brightness slider. When I speak of the circles, I am referring to the solution used by default in Home Assistant, as shown in the screenshot below.