Who gives a shit, do whatever the fuck you want. Be your own person and don't let newschoolers tell you what to do.
"pee on the zombies, because not even zombies want pee all over them" - ktwofreeskier
"Never before in my time at the bar or on the bench have I ever had to deal with somebody who voluntarily allowed himself to be buggered by a dog on the public highway. Frankly it is beyond most of our comprehension" - British Judge
In all seriousness green and red are complimentary colors, so green is often paired with a red-orange. They often look good together, but they can also look really bad. The green seems pretty desaturated, so a brownish orange wouldn't look bad. A bright orange will look much brighter next to that jacket. It really depends on what you want for your look: color harmony or visual tension.