Recently, I spotted inexplicable behaviors in advanced color selector.
I'm using krita 3.0 with HSI as the color model of advanced color selector.

I didn't understand this for a while, but I noticed that advanced color selector can only pick sRGB colors.

I'm a bit sad that nobody replied to my recent posts so far.

It seems it is not an intended behavior but a bug.
After some search, I found https://forum.kde.org/viewtopic.php?f=139&t=133261&p=357944 and https://bugs.kde.org/show_bug.cgi?id=343531.
Literally, advanced color selector cannot pick a color beyond sRGB color gamut.
This bug doesn't hinder my workflow, yet because I work on sRGB-capable monitors.
But, rec.2020 monitors are entering the market in 2016. https://en.wikipedia.org/wiki/Rec._2020#2016

In about 5 years, this issue could become very important.

Is any developer interested in making it possible to vote on this issue in a new kickstarter campaign?
Perhaps, the issue can be advertised in a kickstarter campaign as a new feature such as "wide-gamut colors for advanced color selector".

I am on my way fixing it. Don't know when it's going to be finished. Probably within 5 years.