I have the plasma browser integration. It adds an item to “Share” in the context menu (for use with KDEconnect etc) and integrates Firefox with the media player.
It pops up whenever a KDE application offers colour selection. Easiest way is probably to open settings to Appearance > Colors and click the Custom button.
Falkon also uses it with input type=color which is why the screenshot says Falkon in it.
No. The purpose of Linux is to provide a free and open source operating system, that can be customised by yourself and the community to your liking.
I like KDE's colour picker. It seems I would like the Windows one as well. It's a good design. Linux doesn't exist to be contrary, it exists to be a customisable, open experience.
But why would I go to Windows, if KDE has the same colour picker? Literally an argument for me staying is that the colour picker is identical, so not worth switching for the colour picker (which I really don't care about when it comes to choosing a desktop).
All I wanted was to see if anyone knew of a way to allow Firefox to use my desktop environment's colour picker. I don't care if the design is "stolen" from Windows, and I doubt Microsoft cares either. You really have picked a very obscure, and rather stupid hill to die on.
Sorry for being harsh, I'm just frustrated that the discussion here is about KDE's colour picker design, and not about customising Firefox, which is what I asked about.
If it's such a problem for you, and you are obviously a colour picker expert, why don't you make KDE a new colour picker. I'm sure the community would appreciate a new and innovative colour picker, if it's genuinely better than the Windows style one.
set your phasers to stun, we have some hobbits to deal with