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.
You are the first person to actually try to understand what I'm getting at and what my project is. Strangely, you described it fairly well..
As much as I'd like to share my prototype software with you, I'm not sure this is the thread I should share it on.