Ubuntu / Apple :: Applescript To Change The Desktop Color Via Plist Edit?

so I found this applescript somewhere, and not knowing applescript I was wondering if someone could tell me what the edits I need to make to duplicate the functionality found in the perl script which follows the applescript. (ie. I want to cycle through the colors in the same sequence)

Applescript (written by someone else for OS X)

Code:
tell application "System Events"
set theDesktopPlist to property list file "~/Library/Preferences/com.apple.desktop.plist"
set theGivenDesktop to property list item "desktopCode" of property list item "Background" of theDesktopPlist
try
set theColorArray to property list item "BackgroundColor" of theGivenDesktop
on error

[Code]...