When I went to the lfs
to buy this pleco I originally asked for a blue. The owner (who is great) said how he no loner carries blues because he thinks they aren't that good looking.
I was disappointed until he said that he carries GREENS
At first I wasn't sure if I liked this color as much but it has really grown on me
I love the yellowish fins and the emerald color!
I think the blue is really more of an inky color and I now much prefer the green which IMO
is a better looking pleco for that price range
But in the end it is your decision
(And the greens grow larger)