I don't know about fonts - I guess just stick with the standard ones, like was said.
As far as color, if you want a listing, http://htmlgoodies.com/tutors/non_dithering_colors.html shows a table of 216 colors that are safe to use on the web. Or are you asking if a script can generate that list on your page? If you are... no idea :p Unless you could make a script that will go through those colors and make a clickable list for the user. That would be possible, and nifty, though it would also be static (that is, the user's browser would have no effect on what colors they can choose from).
Hope that helped somewhat (=
