Swing Queue Color

What it does
Heroic Strike queued: the bar turns yellow.
Cleave queued: the bar turns green.
The queued ability's icon appears on the left of the bar, with a matching border.
It works on the game's own swing timer. It does not replace it or add new bars.
Setup
Turn on Swing Timers in Options > Advanced.
Heroic Strike or Cleave needs to be on one of your action bars.
The addon finds the swing bar by itself.
Settings
Open Options > AddOns > Swing Queue Color, or type /sqc.
Enable or disable the addon.
Tint the bar fill, show a thin outline, show the ability icon.
Pick your own colors for Heroic Strike and Cleave.
Preview buttons so you can see the colors out of combat.
Commands
/sqc          open settings
/sqc status   show what the addon found (for bug reports)
/sqc pick     hover the swing bar, then run this to select it manually
/sqc reset    go back to automatic detection
Known issues
Forever is in beta, so the swing timer and addon may change.