Females of Plebejus melissa paradoxa can be predominantly brown or blue. Whiskey Flat Trail above Kernville, April 13, 2014.
I went to Lake Cuyamaca and found 'Orange-Margined' Melissa Blues, Plebejus melissa paradoxa, flying on August 25, 2007. This is another female.
A male Melissa Blue from the same day.
Ventral of Plebejus melissa paradoxa, same day. This is a photogenic butterfly!
This one is from the Tehachapis, where a few were flying among lupines along the PCT south of Oak Creek. July 2, 2017.