badge in .active item of <ul>-based list group doesn't switch color schemes

Created by: cvrebert

Example: http://jsbin.com/korur/2/edit Note how the middle badge in the 2nd (div-based) list group is blue-on-white, whereas it's white-on-gray in the 1st (ul-based) list group. Confirmed that this is still an issue in v3.3.0. From #14913 (closed).