i.
The first time Harry ever really noticed the colour orange was when he saw 6 people with hair the brightest orange he had ever seen walking through King's Cross Station.
He had seen orange before, of course; the orange of the juice he wasn't allowed to taste, the orange of the Surrey sky when he was forced to wait outside until it faded.
To the day he died, the only time Harry ever saw that colour was when it was on the head of a Weasley.
Some time in the middle of their first year, following another one of Draco's taunts, Harry briefly mentioned the muggles he'd seen with orange hair.
Ron laughed in amusement before he said to him "I've seen that hair they call orange once, it's no where as close to ours! When we were little, mum used to tell us the story of why our hair is the colour of fire. She said that long ago, when dragons were still allowed to roam freely, one of the first Weasley's got lost as a child, and was found by a dragon. Instead of eating him, the dragon raised the boy as her own, and breathed fire onto his hair to tell all the other dragons to leave him alone! It's why Charlie's so obsessed with 'em, he wants to be just like the boy and make his own family of dragons." And for the first time that year, Ron looked proud instead of ashamed of the hair that marked him as a Weasley.
Over his next few years at Hogwarts, Harry came to relate orange not as the colour of the ugly sweaters handed to him by the Dursley's, but as the colour of a boisterous, loving family who gave him an understanding of what it was like to have a family.
Orange was tight hugs, practical jokes, loyalty, and family.
ii.
It was so hot.
Running for his life, Harry could feel the scorching heat of the fiendfyre licking at his feet, the roaring of the flaming creatures drowning out the panicked shouts of the teens dodging the deadly orange heat.
Hearing the thin, agonised scream of Crabbe as he was consumed by his own flames, Harry's fear choked him, and when he saw Malfoy trapped, with the limp body of Goyle cradled in his arms, he flew to their rescue because he didn't want to leave them to die.
But what he would never mention when people brought up his saving of the enemy after everything was over, was that he also saved them because he never wanted to hear the haunting scream of anyone being consumed by the ugly orange of cursed flames ever again.
A/N:
There'll be 2 or 3 more chapters based on the some other colours, and the last chapter will have a pairing :)
Please leave a review; criticism is welcome!