I've never been to Colorado, but as far as I can tell half the men in the state are Candyman lookalikes. Moreover, while undoubtedly a creep, there's been zero evidence presented that he had anything to do with Jessica. I'm not sure what bringing up that sketch again could reasonably accomplish.
Not a personal criticism, absentia, just my thoughts on that general line of inquiry.
what could it accomplish? well, I'll be watching out for that man in particular, to stay away from and to call LE if I see him as he's wanted for murder. also, in my mind, it helps to put a name and face to JR's killer. makes me feel something more concrete about who it is, instead of thinking it could be anyone anywhere.
that may be not the truth, but it makes me feel better.