Documentation for customizing look and feel

Original report

Currently there is no good documentation for how to customize the look and feel of FishEye. Merely looking for something that would provide some guidance on what CSS styles to override/update to change common things, such as the colors of the header, tabs, links.

The closest thing we have is "Customising FishEye's Look & Feel" (http://confluence.atlassian.com/pages/viewpage.action?pageId=92504217) which specifies where you can put modified files, but that's it. Being a JSP source-owning enterprise customer doesn't provide much value if we don't know how to go about adding customized content.

Not looking for something as nice as JIRA's interface for customizing colors (although it would be nice), just some guidance on where the things are that we can change.

Articles available

https://confluence.atlassian.com/fisheye/customizing-fisheye-s-look-and-feel-960155679.html
https://confluence.atlassian.com/fishkb/customizing-fisheye-and-crucible-look-and-feel-428802654.html
https://developer.atlassian.com/server/fisheye-crucible/page-decorators/

Plugins available

https://marketplace.atlassian.com/plugins/com.atlassian.fecru.plugins.fecru-look-and-feel-plugin/server/overview