“If Aphra Behn were here tonight, I hope she’d forgive our trespasses,” the groovy hippie chick says in the prologue, touching a white marble bust perched nobly next to a hot pink lava lamp with a zebra-striped base.

So opens Liz Duffy Adams’ play “Or,” in which there are many trespasses -- terrific trespasses and glorious liberties, which historical muse Aphra Behn, if she be anything like legend and this character portrayal, would no doubt forgive but downright appreciate. The play is an entertaining exploration of themes including identity and disguise, feminism and sexuality, and societal paradigms, built around a fascinating female figure from the literary canon and packed with witticisms and dashing dialogue. And Southwest Shakespeare Company’s production of “Or,” is a buoyant and brilliant testament to the talent of the company.