Bear Skin is the default theme for the Bear starter profile, which is a profile to use as a starter kit when building a new site. Bear Skin does not rely on the profile, but can be used as a simple, clean theme. Bear Skin is somewhere between a pure starter theme and a more styled theme. It can be used as a starter theme that will be heavily customized, or, for smaller projects, it can be lightly customized and give you a nice looking responsive theme with little work.
Bear Skin is a subtheme of ZEN which features an extensive documentation. These might be good places to start if you have the desire to know a little more in depth about this release. You will be required to download and enable ZEN to use this starter theme. Place Bear Skin along with ZEN in the same theme directory.
The choice to use to ZEN was made when thinking about the best way to develop and extend on top of a very solid and well supported base. This allows the bear theme to do some minimal skinning but most importantly, integrate well with the contributed modules included in the Bear profile as well as providing powerful sass structure and compass gems.
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