RGB - nope
Composite - probably not
RF out - probably a little
The FCC likes to see shields on this stuff so as to not cause interference across other peoples gear nearby. In practice though, I think it's all a bunch of rubbish that's not so neatly wrapped up and mired in politics.
Seconded (except I'd say Composite - very unlikely).
The chance that significant RF interference would be created by this move is really small. And, by FCC standards, were you to create a problem with someone elses electronics you'd only be obligated to remedy the situation.
If there's an advantage in it for you, I'd go for it.
