Take any current style for example, it comes in 8 stunning color variations to give you a variety of options to suit your varying design needs. The ability to change colors on the fly is intended for demo purposes only, you should set the following variable in the template manager.
There are 3 color variations for each style at least, which results in a minimum of 24 combinations (fixed) while the real limit is only your imagination !
You can apply different style to different pages , and menus... only you decide !
Here is two examples :