I made this for myself and have decided to share it.
THIS IS NOT AN ADDON. This is a simple texture replacement for the action bar and associated images. It covers the main action bar, the exp and rep bars, and a minor edit to the button border.
I strongly recommend that you use an icon replacement package like Clean Icons by suicidalkatt. Do not use square icons with this action bar texture or it will look odd; use icons without corners.
For the future:
* A square version
* Different bg textures and/or colors
* Different end cap (gryphon replace) options
Please comment if you want me to work on these other options. I'm not going to go through the work on something I won't use if there is no interest.
-- Installation --
Extract the .zip and put the Interface folder into your WoW directory.
-- Uninstallation --
Delete the BUTTONS, MAINMENUBAR, and PaperDollInfoFrame folders from World of Warcraft\Interface.
-- Notes --
The menu buttons in the screenshots are from Aurora: Missing Textures by Tonyleila.
Huge thanks to Digital_Utopia and his BLP Format Plug-in for Photoshop. It enabled me to save these images in a higher quality than provided by BLP2PNG and preserved the gradients and finer details.