This seems to be a much harder beast to find than I thought it would be :(  

For a project, I need to provide a method by which non-technical users (ie, managers and other neophytes :)) can easily (visually) edit the styles set by an arbitrary CSS1/2 stylesheet, within a web browser.  

The users won't know any CSS, they are going to need colour pickers, drop downs of valid choices for the style (eg font-family) they are editing, examples of border styles etc.

The more I think about it the more insanely time consuming it would be for me to write it from scratch, there's got to be one out there existing already, even if it's commercial that'd be ok to save me way too much work.

Gotta be able to run it on a typical linux server, so if it's not fully javascript based, then it's backend will need to be php or perl or something like that.

Anybdoy got a pointer to one?