To tattoo or not to tattoo? That was definitely not the question. At least, it wasn't the question being asked by the people ready to think ink Friday at the Adam's Mark Hotel, where the inaugural Denver Tattoo Convention was convening. And whether you want to label the scene unfurling in the hotel's Grand Ballroom bizarre or beguiling - judging from the displays of flora, fauna and phantasmagoria, to say nothing of "weird eyeball things" - on assorted backs, chests, arms, legs, hands, necks and nether regions, this is definitely an event to dye for. "You can feel the energy....