This was a style sheet only job. In Game style sheets were provided free to the players who linked to them from this site.

This is an original style. Very nice to look at if you like dark.

http://twstyles.net/Castle-Battle/styles/christmastop.css

http://twstyles.net/Castle-Battle/styles/blue_box.css

This is an example of a custom navigation system which you can see in use at this website.