Working set cube upper right corner

[John Hayes]

Hi,

I'm working on the KDevelop5 online Manual and I have a question that
I hope someone could help me with. Could someone describe the meanings
of the different coolers of the group of four squares that appears in
the upper right corner of the KDevelop interface? I think I have found
the source for it but there is nothing to tell what the colors
designate.

Cheers,
John