I use KDE Plasma, and much prefer the KDE color picker over the GTK one that Firefox uses, with input type=color.
I know that I can set GTK_USE_PORTAL=1 to make Firefox use the native file picker, is there a way to make it use the native color picker as well?
I know there probably isn't a way, but I figured it's worth a shot asking.
In about:config see if setting widget.use-xdg-desktop-portal to true does anything for you.
Hmm, it appears it already is set to true. Unfortunately that doesn't seem to work.
If I recall correctly that enables the kde file picker at least