D22360: Use QColor::darker/lighter instead of QColor::dark/light

zzag created this revision.
zzag added a reviewer: KWin.
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REVISION SUMMARY
  QColor::dark() and QColor::light() are obsolete since long time ago.

REPOSITORY
  R108 KWin

BRANCH
  port-from-qregion-rects

REVISION DETAIL
  https://phabricator.kde.org/D22360

AFFECTED FILES
  plugins/kdecorations/aurorae/src/decorationoptions.cpp

To: zzag, #kwin
Cc: kwin, LeGast00n, sbergeron, jraleigh, fbampaloukas, GB_2, mkulinski, ragreen, jackyalcine, Pitel, iodelay, crozbo, bwowk, ZrenBot, ngraham, alexeymin, himcesjf, lesliezhai, ali-mohamed, hardening, jensreuterberg, abetts, sebas, apol, mart