It's really hard to say. S-F, I'm not doubting that yours doesn't match the pictured Peacock mantis, but Peacock is the common name for Odontodactylus Scyllarus which is an Indo/Pacific species. These are commonly green to olive with some taking on more reddish/orange. Sometimes many... all? mantises are called peacocks. I recently saw a N. Wennerae misnamed as an O. Scyllarus at the Academy of Sciences - Steinhart Aquarium. I hope they liked my comment card.
From florida rock see if you can tell if it has 4 sharp telson points and possibly a yellow/orange color at the eyes. If so it may be Neogonodactylus curacaoensis. The dacyl heels (hammers) will especially be blue also if it is. The color of these can actually be variable except for the hammers.
Dr. Roy says that these are common from 10-30m where light is mostly blue. Best kept in low light or given a dark den.
That's just a best guess though... posting the pics at Reef Cent-s mantis forum would be your best bet, if Dr. Roy should see it.
Still sounds like a cool one you've got.
-Rogue