/usr/lib/python2.6/dist-packages/tracwysiwyg/htdocs/wysiwyg.css is in trac-wysiwyg 0.12.0.3+r10725-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.6/dist-packages/tracwysiwyg/htdocs/../../../../../share/pyshared/tracwysiwyg/htdocs/wysiwyg.css