RGB led on Arduino with Firmata

How to make a card in lovelace with color picker for led rgb strip connected to arduino with firmata?

If the light is configured as a color light in HA. Just clicking the entity, when it’s on, will bring up the color wheel. You can use an entity card or a button card with a long press to display it.

This is the question: how to make three lights (red, green, blue) one? Firmata doesn’t do this.