This fanfic is by Luckybird7765, from the Wings of Fire Fanon wiki.
Lightning cracked the night, and an ear-shattering roar of thunder followed. RainWings huddled in the canopy, enduring the icy rain and turning shades of gray and yellow with fright. Dragons flew with confusion and trees lit on fire with the strikes. They toppled, crushing monkeys, birds, and scavengers hiding on the forest floor. A large auburn RainWing flew with a small brown egg in her claws, evacuating the burning remains of her home. She knew that she would find safety in the queen Dazzling's palace, and flew that way. Another fork of lightning shot across the rainforest, missing her tail by a couple of feet. She shouted with fright, and dashed toward the large marble building in front of her. She crashed in, barreling across the pearly floor. She clutched the egg tight, and thankfully it did not break. She got up, checking the small brown sphere for cracks. She had one child, and she would keep it that way. She did not mind when it rolled slightly across the floor.
She was checking for singed scales or cuts on herself. She spent her time, making sure every one of her multicolored scales were just fine. She only looked back to see a dragon, careless and frightened, step on a brown egg. HER egg. She screamed, leaping for the dragon's foot, who had jumped back. She looked at the remains of her egg. Thankfully, it was very close to hatching and the baby was visible. But was it alive? She looked frantically at it, hissed at the dragon that stepped on it, but then saw the baby move. It's chest heaved, and it's paws moved weakly. Overjoyed, she cuddled it, her scales turning a warm pink and red. The baby blinked, and opened large, orange eyes. They looked at each other, but then the mother saw something very wrong.
His scales wouldn't work.
Normally a RainWing dragonet would immediately turn the same color as his or her mother, learning to use them, but this dragonet seems to only have his wing membranes working. The love turned to disgust. She looked at his dull grey scales, which did not change at all. She hissed under her breath, and turned. She flicked her tail across his face, the worst thing a mother dragon could do to her dragonet. It meant she was disowning him. He cocked his head, and looked at her. Then he cried for food. But the dragon, now a pale green and yellow, opened her wings and took off, leaving the dragonet. He cried for her, stumbling on his pudgy legs, but couldn't fly. He crawled around, mewling and whimpering for his mother, but no one noticed. He sat, and cried, small drops falling from his face. A shadow fell over him and he turned around. Another dragon, her scales encrusted with jewels and gold, stood before him. She picked him up, looking at him closely.
He cried for food.
The dragon lifted off, but this time with the dragonet. They flew up toward a room that was very shiny. The dragon gave him food.
The little RainWing stared at her, and accepted her.