How to change a GeoShell Skin

The hard(er) Way

Actually, this isn't as hard as you might think. Just open regedit and go to HKCU\Software\Geo\GeoShell\ShellUI\Skins, this string is where the path to your skin goes.

There is also HKCU\Software\Geo\GeoShell\Services\Plugins\GeoBar (X)\Skins (where X stands for the number of your bar). This setting can be used if you want to have different skins for different bars. If this string is left blank, the setting from HKCU\Software\Geo\GeoShell\ShellUI is used instead, however individual bar skin settings always take priority of the global setting.

The Easy Way

Download GeoSkin (GeoSkin.exe, attached). Once you have that, everything else is self-explanatory, plus you have lots of other fun options like skin tinting, etc...