I like the animated movie look.I think its great
Just loose the high collar.Add a badaas Medallion and hey presto.
Actually Aquaman to me is one of the few New 52/Brightest Day character who can actually make the high collar look work for him and makes it look good. I now actually prefer the high collar look instead of just the regular costume with just the regular shirt like neckline opposed to Superman which I wish was back to original neckline instead of having a high collar .
While the medallion(or necklace) is optional for a costume choice. I do agree with in saying that he should keep the orange and green and just show why is one of the top dogs in the DC Universe without having to drastically change him and make him grim and gritty in the process(including cutting off his hand, killing his baby son off, and implying his whole family on his mother side might have a history of mental illness/insanity among other things)
If anything make it look more Gold and Green like Alex Ross does. But definitely have a good explanation explaining why he chose the costume and color choice like some comics and TV shows had. Post crisis/Keith Giffen Legend of Aquaman special/Peter David Time and Tide comic wrote the costume as a standard prison uniform and after learning his mother died, he escaped while unknowingly causing an uprising painting him as a hero and legend while stopping the Trickster meeting the Flash which the media painted him as a superhero and naming him Aquaman while starting the A on Aquaman's belt buckle stands for Atlantis.
New 52/Geoff Johns simply described it as Atlantean Scale Mail since he wouldn't willing "choose" orange which Green Lantern admitted he didn't mind the orange himself but his medallion has to go(even Green Arrow in Kevin Smith's Quiver said he thought Aquaman was the only one who can rock the Orange and Green).
Smallville Aquaman was a former student at the University of Miami before dropping out in Aqua when Lex was hunting for him( On the University of Miami swim team, he swam in multiple events and held multiple records and was also the Team Captain and voted MVP) , whose colors are orange and green. Arthur is often seen wearing orange and green in his regular clothes and Smallville Aquaman costume (except for his stealth costume which is black with yellow lines) so he most likely chose these colors to be his superhero colors because they are the University of Miami's school colors which says a lot about him.
But then again they could go the simple route of him wearing orange and green because he loves orange and green and he doesn't care what anyone thinks because he's Aquaman.