what is this? bash shows rectangular colored filled area

Question

I just have seen that (see picture) and I'm wondering what I see there.

It's a little script, showing the status of a SAP server, which is executed by "watch"-cmd in a tmux-box. When I move with the mouse over the word "GREEN", bash shows me a green filled area.

What kind of function is that? How is it named, configured, where is it part of?

I've done a little internet search that gave me no result

OK, it's from the konsole Terminal Emulator of KDE. And it shows some more colours as well, but I have no idea what's the use of it.

Answer 1

Konsole is quite smart, it has integrated many things. In this case, when hovering curses over some text it is showing you the color of that text, so YELLOW shows a yellow box.

What kind of function is that? How is it named, configured, where is it part of?

You would have to browse KDE konsole source code for that.