Yeelight Adaptor Does not show Dimming, only Color

I have several RGBW version 2 Yeelights installed, and while it does allow me to change the color of the bulbs, it does not allow me to change the dimming value. Why is this?

A long time ago, we made a design decision to only represent RGB for that type of bulb, as the brightness is actually a component of the color. You should be able to change brightness in your browser’s color picker.

Okay, thank you. I will look again at it.