if it's blueberry and grown indoors, then it may not appear blue in any way.........plants grown outdoors and in a slightly colder climate at nightime tend to go blue, and sometimes purple..........here's a Blueberry grow pre harvest and post.........
http://forum.grasscity.com/photopost...00&ppuser=2799 ....................the smell is very distinct from all other weeds i've smelled...........Peace out............Sid