DotNetNuke has traditionally been packaged with default skin packages pre-installed. The installation packages for those skins are available here.
The following Skins are currently available:
DNN-Blue*
DNN-Gray*
These are skins from the DNN 3.1.13 package:
DNN-Green*
DNN-Red*
DNN-Yellow*
Dnn Extropy Beta skin
This skin is only here for reference, it is currently not supported and not for use in a production environment.
If you find any issue with this skin, please log them in the issues tracker (here, not in the DNN tracker).
If we get enough feedback, we will release a "stable" version of this skin.
DNN-Extropy Beta*
The skin with the vertical menu might not work in DNN versions above 4.4.
You can replace the Treeview menu with the NAV skin object and the DNNTreeNavigationProvider.
(read the skinning documentation for more info)