as yet to be identified sea slug. [danger]

Here's a pic of a recently acquired, but yet to be identified species of sea slug. these things look like aliens and are known to be quite poisonous. they are similar to nudibranchs and change color much like an octopus or cuttlefish [see below]. I'm trying to id this species before I introduce it into one of my reef tanks, so if anyone knows the species, please email me. I've got it in a quarantine tank for now.

pic taken with samsung t-809 cameraphone