thanks for answered the questions! :)
I just did another tank change (he gets on daily), and his stress stripes were nearly gone, but came back after moving him. His color does show (he's a nice green color, pics can be seen here: http://www.bettafish.com/showthread.php?t=130895
) but the stress stripes are 50% of the time always there.
I think he sill might be young compared to what the other babies have looked like (I've seen many pics and they all seem to be somewhat bigger than him), BUT I can tell he's trying to flare which is adorable. He'll look at the bigger guys and his fins will expand~
EDIT: His one ventral is longer/about same length as his anal fin :)