Add/Improve the color settings page for Pig

I activated the color settings page and added several types to it.

I think using yours is the right way to go.  I've added you as a developer to my plugin in the repo.  I don't know of a good way to combine two plugins in their system.  I would like for all the people who've downloaded mine so far to automatically get notified to download the new one.

One issue I ran into with my plugin was that I had to add extra code to the SyntaxHighlighter to let it run in older versions (10 and 11).  I'll try to test whether your version needs that code sometime this week.  I have some old installations at work if I get a free moment to try them out.