Some ribbon tabs are designed for use only in a particular context, such as the user selecting an object within
your application. When the user selects that object you want to display those extra tabs but otherwise have
them hidden. You can assign a context definition to any of the tabs and use whatever color you like to make
them standout from the regular tabs. You can even have several contexts active at the same time, below you
can see that the red, green and blue contextual tabs are all showing at once.