With John at Brave Halfling's permission, I put together an X-Plorers Firefox skin. It looks like this on a Mac:
It doesn't look quite as nice in Windows. If you test it out, try having three or four toolbars at the top of the browser in order to see the artwork better.
You can get it here. Maybe someone browsing through the thousands of skins available will stumble on it and discover the OSR publishers. Sorry, retro-clones...
Preparing to Descend
3 hours ago