Ken with a company called Kotings is awesome. He's in the phoenix area. Www.kotingscompany.com for info. Just did a job with him at desert ridge resort in phoenix that turned out amazing.
Not on a garage, but plan on using the same color combo and system in my new home I'm purchasing. It's a Stonhard product called liquid elements and looks awesome, is chemical stain and ding resistant, and also unfortunately expensive as hell.