Hey Paul,
Here's an excerpt from [the documentation](http://www.gluu.org/docs/admin-guide/custom-look/) about customizing look and feel:
> "It is possible to unpack the contents of the said jar into a folder hosted by a web server and change the default cssLocation, jsLocation and imgLocation attributes in oxTrust.properties and/or in oxauth-config.xml
CSS: The location is specified using the property `cssLocation`
Javascript: The location is specified using the property `jsLocation`
Images: The location is specified using the property `imgLocation`
For example, in `oxTrust.properties`
`cssLocation=https://idp.gluu.org/static/stylesheet`
`jsLocation=https://idp.gluu.org/static/js`
`imgLocation=https://idp.gluu.org/static/img` "
Let us know if you need additional help.