Colour Saturation

I keep seeing this reply to the same question on multiple threads, but I don't see an advanced control button under Data colors section of formatting pane. I'm using the app version of the software which should be the latest, but checked against a desktop version from a few months ago as well. Am I alone here?

Baha! After much searching, I did find it. In it's infinite wisdom, Microsoft has created a tiny low-contrast sideways elipsis button next to the "default color" (top right of data colors tab) - BUT ONLY when you hover your mouse near that part of the screen. When you press that hidden button, a menu of one option appears: Conditional Formatting.