When a wizard is born, everything is in black and white. When they make eye contact with their soulmates, the world gets color.
Drarry AU: When he grew up with the Dursley’s, Harry assumed that he was genetically colorblind. It was a pain in the arse, but it was manageable. He had never known any different.
Of course, when Hagrid shows up, his whole world is turned upside down. Magic and owls and broomsticks and soulmates? How did he get into this mess?
And a month later he is on the way to Hogwarts boarding the train with Ron Weasley, smiling and joking, when Hermione Granger walks into their compartment and walks out as the room train colors before them. Ron was quite understandably offended. “Honestly Harry, I’m not bad looking! I mean the freckles are a bit off-putting but- that was just rude!”
When inside Hogwarts Harry meets Draco Malfoy, who is the most vivid anything Harry’s ever seen. White-blonde hair and smirking features all carved out. It takes him a moment to get over the shock of meeting his soulmate and then Malfoy not mentioning it. And then to add insult to injury, he’s a total arsehole. Harry thinks that there must’ve been a mistake. Malfoy can’t be his soulmate. He’s cruel and insulting. Obviously, he didn’t even recognize Harry!
In his Second Year, when they are masquerading as Crabbe and Goyle, Harry figures out why. Malfoy is actually genetically colorblind. He has no idea that Harry is his soulmate. He never will if Harry doesn’t tell him (which seems to be his best option.)
In Fourth Year, he asks Professor Sprout if his roots are supposed to be purple or dark red. She answers without hesitation, but everyone else in the class turns around to him and stares. Harry realizes his mistake and blushes visibly. He has no idea how to explain how no one knows who his soulmate is.
He hastily explains that they’re trying to keep it quiet until the tournament is over, which leads everyone to believe it’s a girl from one of the two opposing schools. He is off the hook until he lets it slip that his soulmate is a he. Everyone is then wondering which one of the boys it is, and Harry gets teased mercilessly from Malfoy.
In sixth year, Harry knows something is up with Malfoy. He can feel it. He tries breaking into the Room of Requirement countless times to find out what Malfoy is doing in there with no avail. Malfoy looks tired and stressed constantly, and Harry wanted to hug him and tell him everything would be all right.
Right after Christmas break, Parkinson stands up in the middle of the Great Hall waving her arms wildly and whistling, demanding everyone’s attention. She claims that she has waited six long years to tell everyone, but she is actually Malfoy’s soulmate. She explains his genetic colorblindness, that Goyle told her about yesterday, and says that she never knew the right time to tell him but here we are! Malfoy looks up, entirely shocked. He scans the Great Hall, full of confused onlookers and storms out. Harry knows how it looks, but he follows him straight to the Girls’s Lavatory. Harry can’t believe she’d sink so low as to lie to him. He has to set the record straight.
Harry tells him in a whisper, but the look on his face says that he most definitely heard. Draco stalks over to Harry, asks why are you doing this, please, are you lying to me?
Harry shakes his head and laughs bitterly, “Honestly, why would I make that up?”
Draco laughs back, “God, it seems like the world is playing a sick joke on me this year. I knew I felt different after meeting you, but I just passed it off as hatred.”
They must spend hours, talking in the bathroom, but once Draco leaves, it’s the last he speaks to him. At the end of the year, Draco attempts to kill Dumbledore. Harry knows he won’t go through with it, but it hurts. The boy who he loves trying to kill a sort-of father figure for him. It’s a different kind of pain than Harry has experienced. A burning flame of betrayal and heartbreak.
Draco doesn’t identify him in the next year, barely puts up a fight for his wand to be taken, looks at Harry guiltily. Harry knows that Draco feels the same way he does. He sees it all over his face.
The Battle of Hogwarts and with their confrontation in the Room of Requirement laying heavy on Harry’s mind, he thinks it’s going to be okay, The way the Malfoys refused to fight for Voldemort, the way Draco couldn’t even manage to say he didn’t love Harry, the look in Draco’s eyes once he realized that Harry was alive, Harry knows it’s going to be okay.