D7424: Very slightly increase text contrast for the default Breeze color scheme

[Nathaniel Graham]

ngraham edited the test plan for this revision.

REPOSITORY
  R31 Breeze

REVISION DETAIL
  https://phabricator.kde.org/D7424

To: ngraham, hpereiradacosta, jensreuterberg, jriddell, kvermette
Cc: plasma-devel, ZrenBot, progwolff, lesliezhai, ali-mohamed, jensreuterberg, 
abetts, sebas, apol, mart, lukas