So, I’m running the default kvantum theme, liking it so far. Only thing is, I’d like to change the gradient bg of pushed toolbar buttons (e.g. those in dolphin) to a flat one. Do you know how to do that? I banged my head against kvantum docs, to no avail 
You should be able to use the kvantum manager for that.
I can’t seem to find anything related to the “pressed” toolbar buttons unfortunately…
EDIT: found how I’m supposed to do (edit the svg), now I only have to find it 