Tiny Tuesday Butterfly

I think this might be a common grass-blue as described by Paladian.
Mine looks a bit brown here but I think it was bluer in real life.

If not, it is the mystery macro we were supposed to blip :-)

Anyway it was a lot easier to photograph than the bigger orange and black ones (? monarchs) which were very agitated and didn't settle for more than a second or two. 
Maybe it was the wind, or else mating season as they seemed to be tearing around in twos (or in one case threes!!)