SkinPack El Capitan
SkinPack El Capitan 2.0 is available as a free download on our software library. This free software was originally created by SKINPACK. The software lies within Desktop Tools, more precisely Themes.
From the developer:
Mac OS X El Capitan SkinPack will transform your Windows 8 and 7 to Mac OS X El Capitan in just a few minutes.
You may want to check out more software, such as El Capitan Transformation Pack, SkinPack Alienware Evolution or SkinPack AlienBreed, which might be related to SkinPack El Capitan.