Does anyone know anything about branding Imp? I know it can be done because I have seen a few custom Imp interfaces but the Horde site has no documentation on it.

My guess is that it is just a matter of editing php templates, I thought someone here may have done it already.

later...
I see the templates in /usr/local/psa/home/vhosts/webmail/horde/imp/templates/

but those would be global changes, I want to make a vhost level interface.

Rick