I've modified /usr/share/themes/Ambiance (recursively), search-replacing all the "1px" to "10px", and (after logging out and back in) the line at the desktop's right edge looks about 10px wide.
So we're on the right track.
I've modified /usr/share/ themes/ Ambiance (recursively), search-replacing all the "1px" to "10px", and (after logging out and back in) the line at the desktop's right edge looks about 10px wide.
So we're on the right track.