This enables tighter integration with default Plasma 5 appearance in all
cases, previously all KDE4 applications would be themed using the Plasma 5
Breeze style through a kconf_update script called kde4breeze. This util
writes configs into the user home to make sure KDE4 apps appear breeze
themed. Unfortunately this does not work with sudo'd applications as they
would use a different HOME and thus use the Oxygen theme by default, making
them not fit in with the rest of the default theming.
The patch switches the default icon theme as well as widget style
from oxygen to breeze.
It also adjusts the hardcoded default color values in kcolorscheme from
oxygen to breeze
(thanks to Kai Uwe Broulik https://git.reviewboard.kde.org/r/124872/)