Do you think I can pull off dark green contacts?!

Only way to find out, would be to get fitted for a good pair of green contacts, and see for yourself in a mirror, if they look good to you, because in the end it is going to be what YOU think that matters the most.

If you are thinking a cheap pair of $20 colored contacts is going look good, I can tell you right now, it's going to look more fake than a 9 dollar bill with Garfield the cat's picture on it. Most people, even the ones you do not know, are going to be able to tell you are wearing contacts from ten feet away, and standing in front of you, it won't even be a question of looking natural. (because they won't look natural).

Light and dark skinned friends that have done it, for "a change", most give it a couple of weeks at most.