Non-intrusive: the original Bootstrap files remain untouched.
Modular: you can turn on/off any feature or style.
A selection of those plugins with highest quality and best support from the open source community (mostly GitHub).
Expanding the default Bootstrap look & feel by adding new styles to existing and new modules and applying extra colors.
5 different swatches per color
+ a gray color to break away from color where needed
Different swatches of the same color give more versatility in your site design without having to add CSS manually