OK I snapped a few pics to help you decide. Side by side heres my Pastel lesser(3years old) male and Lesser female(Just over 2yrs). No fancy lighting just a quick shot.
Heres a head shot with both of them. Notice the lighter color eyes and extra blushing on the pastel lesser
To put the browning out in perspective heres a few shots of both snakes as juvies
Male Lesser Pastel
Female Lesser
I hope this was somewhat helpful to you.