This is based on the original ElitePlayerFrame by Kryndon. It simply changes the background texture of your PlayerFrame on your UI.

ElitePlayerFrame version 1.2 -- I never did find a real 1.3 -- was used as a basis, and then made to work with the Burning Crusade and beyond. It's since been rewritten to function better and introduce some added options. It is now designed to work without ever needing to be updated, so expect very few updates unless Blizzard makes API changes, and always enable out of date addons.

It has fixed display modes for each frame design, as well as an auto mode which changes according to the following:

Death Knight:

Alliance:

Blizzcon Death Knight based frame

Horde:

Alpha Death Knight based frame

Level 1-9:

Normal frame

Level 10-59:

Rare frame

Level 60-<Exanpansion's cap-1>:

Rare Elite frame

Level <Expansion's cap>:

Elite frame

Use /epf in game for more info and a list of options.