You need to set up a cowpond skin.
When the original skin is finished open the UIS file in notepad and copy/paste that into a new text. Change the name in the personality to Cowpond skin or whatever and save that as a .SSS file.
Make a new blank text and put into it ..
[Skinstyles]
Number=2
[Skinstyle0]
Name=Original UIS
Skin=Original.UIS
[Skinstyle1]
Name=Cowpond Skin
Skin=Cowpond Skin.SSS
Save that as a .SSD file
All this goes in the original skin folder. Make the new graphics for the cowpond skin and save them in the same folder.
You can add more cowponds by just adding skinstyle 2, 3, 4 etc.