Actually that is the purpose of the Vatican Flag. Rules of Heraldry says that two metals (such as Silver (White) and Or (Gold) cannot touch). But by adopting a flag with white and gold touching the Papacy is declaring "We are above petty laws," and ties it with its status as the voice of God for the Catholic Faith.
Anyways, a crap-load of flags I have laying around, feel free to use any you like, please do ask me though.
Flags of Alliances Past and Present:
Flag of the 1st Byzantine Empire
Flag of a short-lived Governor-General of the Byzantine Empire
First Flag of SPQR
Second Flag of SPQR
Current Flag of SPQR
Flag of PAoN
Flags of Proposed Alliances:
Flag of the GEoS
Flag of the FNE
Random Flags:
Socialist Byzantine Empire
People's Republic of Central Europe
Proposed Flag for SPQR
Imperial/Communist German Blend
Nordic Version of Estonia
Estonian Naval Jack
Old Flag I used at the Legion