I recently wrote an article for the WebGUI wiki. Basically, this theme is here because it's simple to show the conversion process. I'm attaching three files:
Sundark.zip: This is the original .zip file.
Sundark-wg.zip: These are the files, before being uploaded to WebGUI, but after being converted to use WebGUI macros/etc.
Sundark.wgpkg: This is a WebGUI Package, suitable for download and installation in your own WebGUI Server.
I hope you all enjoy the article, and this theme. Thank you!