Anyone have metallic green bees?

I posted on the bug ID forum http://davesgarden.com/forums/p.php?pid=3759947 but haven't rec'd any responses. I think they are Agapostemon sp. found here http://www.dbc.uci.edu/~pjbryant/biodiv/hymenopt/Agapostemon3.htm but not sure until I see them again.

They are really beautiful. Lots of technical detail on the net, but I haven't found any personal experience comments on them.

I have seen this bug before in Fontana, CA few years back...

Thanks, Anna. Saw another one today. It seems we see new insects all the time in our yard - I guess we are doing something right!