bootstrap colors

[gbjbaanb]

I use a dark bootstrap theme. When the calendar is displayed, it uses its own css colours - which results in pretty much all white text on all white background.

Removing the colour references in the zabuto css file made it inherit all the bootstrap colours in my boostrap css, and all was good again.

Which makes me think that perhaps the default css should not have the basic background and text colours specified, the doc should be updated to tell the user which classes to override to colour in the special parts (eg the highlight and badge), and generally leave the rest to inherit from bootstrap.