Is there a way to disable flash but whitelist domains whose flash assets I will display? (Meaning I want to whitelist the domain actually serving the asset, not

Is there a way to disable flash but whitelist domains whose flash assets I will display? (Meaning I want to whitelist the domain actually serving the asset, not the page displaying them.) I suspect that approach would get rid of 90% of flash ads, while still allowing me to watch youtube or play the occasional flash game.