The sky was definitely yellow, but the time for agreement had passed. She stepped back through the sliding door, still eyeing the courtyard below. “Did you take out the recycling?” She heard the truck a few buildings down and spun to face him. He wasn’t looking.
He spent more time erasing than drawing. The rubber crumbs doubled in reflection on the dining table, the one piece of real furniture she owned. She unearthed the brush from his satchel and thrust it under his nose. He accepted it without looking up and swept the crumbs onto the carpet.
He noticed the sky, or a spider web, or a crack in the ceiling, but she was invisible. She collected the recycling and dropped it near the front door while he labored over his final project. Six years. She worked and paid the bills while he fattened himself on knowledge.
She changed into her uniform, saffron sky parching bitter lines in the bedroom mirror. Dust scuttled as she slung the drapes across the track, willing the sky black. He was smoking on the patio again. He smiled and told her she looked pretty. Pretty. Pretty enough to scrub some rich guy’s toilet. She glared and stomped to the kitchen.
His drawing spread tempting on the table, now clear of crumbs. Finish spray moistened the dark secrets of the body he created from living dreams. He lived while she stood in decay. She surged with power, knowing his weakness. Testing the moment, she spoke, “You’re right. The sky is yellow.” The truck choked and bellowed as it passed.
The sky darkened when she left. He stuffed his satchel and stripped the pillows of their cases. Cramming clean clothes in one case and books in the other, he debated nothing. He squeezed onto the old pickup bench with his accumulated years beside him. The recycling truck ground its way back again as the wind whipped garbage across the courtyard.
In a slice of clarity, he braved the storm and returned to the apartment. He wrested the key from the ring and plunked it down on the wilted drawing. Swinging the recycling bag over his shoulder, he walked away without closing the door. Dark wind swiped his burden and splayed the contents across the disappearing pavement. Entombed in the truck, he lurched through the parking lot, impotent headlamps challenging speed bumps and swirling debris. A potted cactus rushed at the windshield and he held his breath, eyes open. In the quiet of that moment, the dregs parted. He exhaled and drove from the screeching menace and into the yellow sky.
Then he remembered. He returned and removed the key, placing it on the table next to the prone body. He swung the recycling and left the front door open. Wind swiped his burden and splayed it across the disappearing pavement. Entombed in the truck, he lurched through the parking lot, impotent headlamps challenging the speed bumps and swirling debris. A potted cactus cracked the windshield and he held his breath. In the quiet of that moment, the dregs parted and revealed the yellow. He exhaled and drove away from the screeching menace.

The last paragraph left me flailing aimlessly. The key, where did it come from? Why did he swing the recycling?
Your stories are so marvelously written as far as imagery. Not too flowery, and certainly unspartan. Thank you so much for sharing such a definite talent for the flash fiction with your public.
I had a toddler on my lap when I wrote the last paragraph. I think it needs a rewrite. I want more stuff in it and fewer words. Hmmmm. It originally said, “He swung the recycling bag over his shoulder.” Maybe I should change it back.