Customising Jenkins' appearance to make it easier to tell instances apart

Question

I am responsible for four different Jenkins installations - two test and two production servers.

What options do I have from within Jenkins to make it more obvious w

Answer 1

In addition to or instead of the Simple Theme Plugin proposed by @Illidanek, you might also try the jQuery Plugin.

This plugin is a library plugin for other plugins to share common jQuery. It also allows users to use jQuery on each view descriptions.

It doesn't completely match your requirements, but it might be useful to add jQuery snippets for special formatting/styling/html-manipulation in the Jenkins "System Message", in view descriptions or in job descriptions.

I personally often prefer the Simple Theme Plugin.