Confused about compatiblity with the palette crate

[Zaglim]

Plotters documentation reads:
"The library also allows consumers to make use of the Palette crate’s color types by default."

I might have missed something, but from what I can tell this is no longer available.

I would expect this to mean that plotters::Color is implemented for palette::Srgba, etc.
I see that in previous versions #20 palette was a dependency, there used to be a palette_ext feature, etc.

I can't work out when or why this was removed.

I'm considering starting another pull-request to bring the optional feature back. Any help or context would be appreciated.