Obviously, it's being made of something totally kewl, dude! since that appears to have been the primary consideration, how kewl it looks.
Nope, not like that's ever happened in Trek before... give me a break - ever single F/X model choice despite whatever supposed reasoning was given for it being a certain way was chosen for how it would *look on screen* in the end. Its after all a fiction, not a science lesson.
And I hate the word "kewl".