Blue and pink swirl together in the open sky, fairy floss colours saturating the sky.
(It reminds him of when he was younger, when he used to watch other kids getting little whisps of sugar on sticks and wondered why he didn't deserve it.)
He mentions as much, in less depressing words, to Lucius, and tells him how whimsical it looks.
"I thought all muggle-raised kids had it, and I knew some people who would badger their parents to get them some and succeeded. No such luck from my parents, though." He says the last part with a laugh, and Harry smiles at him.
"Seems like neither of us have had it, then." Harry remarks, and they sidle into silence for a time, somewhat content with each other's company.
"Maybe, uh. Maybe we could go get some of it together?" Harry asks, smile on his face bright and hopeful.
"... yes, we could." There's something tentative in the way he says it, and Harry knows then, and it is even more solidified after,while they're hurriedly trying to stop their cotton candy from glooping all over their hands.
If Lucius betrays him, he won't be able to pull himself out of his slump again.