Skinning Preview
From GSC Wiki
When GSC is started, it scans the skins directory for *.7z archives. In order to preview your skin, you will need to keep a zipped copy of the skin archive in this directory.
Previewing can be done by opening the settings dialog. Then by selecting the 'User Interface' panel. Finally, select your skin from the 'Application Skins' list and press 'Apply'.
