One of the awful things I see today is lifting someone's work without asking.
You know the site you want to use content from so your first step is to contact that site's owner and pitch your idea.
Hello,
I want to have this website's theme Famous Quotes code to use it on PHP.
Regards,
Nauman

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic