rmgl on "Styling Google Maps - JSON?"

Hi,
I'm trying to get a styled google map to match my wordpress site's styling. I found this:
http://gmaps-samples-v3.googlecode.com/svn/trunk/styledmaps/wizard/index.html
That makes the map look exactly like I want, but I can't figure out where I'm supposed to put in the JSON code...

Help?

Thanks!