In my opinion A-Team did it right.  They came to me with a few concepts for color and style and then completely reinvented their look.  We evaluated their existing logo and moved forward with an entire media package.  They created new business cards, marketing materials (like pens and pads), a custom animation to work as a commercial for their business, photos of both of their shops, magazine ads, billboards, etc…

Obviously this is not the right path for every business but A-Teams concept of brand consistency by using consistent color and design concepts across the board is a great model for any business to follow.