Change color schemes for tools area/Breeze evolution

Summary: I also renamed Breeze to Breeze Light because it's very awkward to talk about the Breeze project when it's not clear whether or not you're talking about just the light version.

Test Plan: TODO

Reviewers: VDG

Subscribers: plasma-devel

Tags: Plasma

Differential Revision: https://phabricator.kde.org/D29439