Yes, that would be a good start, indeed.
Also worth noting that several packages were modified/patched because of
the logo, but *also* for functional changes.
As an example, the conga SRPM in el5/el6 has been modified to also
roll-in CentOS support (for the ricci/luci nodes) so sometimes
"branding" isn't the only thing to search for, but also functional code
change required too