Easiest way would be to copy the class (i haven't looked through livid so i can't say what it's called), inside that file will point to graphics you need to copy over.
If you want to copy the attribute colours over, they'll either be called in the class file, or each individual graphic will have an .xml file which will call the colour. After that you'll have to find them in the livid settings file that is in the settings folder, and copy that to your own.
Im not sure how much experience you have skinning, if you have some it should be easy, if you don't have any, just take it slow, read everything a few times and just do everything one step at a time