I actually do know what kind of flower this is (or at least I think I do, thanks to my Googling Superpower...lol)! I do believe this is a Verbena (specifically Lanai Blue Denim). Check out this link and see what you think -

http://plants.studleys.com/12120034/Plant/15355/Lanai_Blue_Denim_Verbena/

And great capture, Roger!