So, if you still want to work on xymon’s pages themes, it’s not that difficult. I mean, it is design-wise, but technically it’s not.
There are different kinds of pages (status, log, info, history, …) but they all have a common menu and each page consists of a header, a footer, the common menu and a generated body with the status, data, report, history, etc..
Some things are hardcoded, but this is open source, so you can change the body generation too, if you want.
more on that later …