So I've never had the luxury of being able to afford color extenders before... although I've certainly had times I could use them. Do I want them 3" long or 5" long? EDIT: and while I'm at it... Am I going to need many top hats in a Black Box? I'm thinking that they are going to be fairly limited use... since the lights are all hanging where the audience can see them anyway. 3" Long or 5" Long top hats?