How to change Inkscape icons in KDE?

How can I get back the old Inkscape icons?

I tried: sudo cp /usr/share/inkscape/icons/icons.svg ~/.config/inkscape/icons/ but it still doesn't work.

System: Ubuntu 16.04

edit:

Using version 0.92.2 (Have same problem with version 0.91x and 0.92.0 too btw)

edit 2: Am Using KDE

Update Ok, the problem was KDE, changing gnome applications setting GTK solved the problem by choosing gnome for icons.