Returns the classic party frames while removing the new raid frames in all environments. This includes the world, arenas, battlegrounds, raid instances, etc.
To restore the new raid frames, simply go into your Interface options under the Unit Frames category and enable the 'Use Raid-Style Party Frames' option.
There is no configuration for this addon, it just works!
For class coloured health bars as depicted in the screenshot, see StatusColour by Slakah.