If you've visited the Reverse Arrow Colours page, and it's not working, that would be because you've got cookies disabled.  

First solution is to enable cookies (look under the options menu of your browser), or if not happy to do that, add "?rev=1" to the weather page url.

e.g.

If you're visiting

http://www.seabreeze.com.au/graphs/wa.asp

append it to the url :

http://www.seabreeze.com.au/graphs/wa.asp?rev=1