Re: Color gels?
It's possible, but that alone wouldn't grant you that end result. Some of those would be tricky to get solely via lighting, especially with a live subject. It's typically easier to get those background falloffs in photoshop than with multiple lights and flags, especially if you don't have a huge area to work. Getting the eyes just right is often difficult as subjects move. The rims can also be thrown out of place rather quickly, so they are likely to need some adjustment in post. Anyway yeah some of the lights could have been filtered. I'm thinking more of the backlit portions than the main lighting though.