Al's clothes were all color-coordinated, although it wasn't much of an achievement by itself. In fact, various shades of dull-grey were extremely easy to color-coordinate.
They blended well with the dim space between library shelves, into the greying brick walls of the corridors.
It was as if everything Al wore, an attire more part of himself than a bird's feathers would have been, had gone grey before its time... Robes, shirt, trousers, socks... only the grey fabric of his boxers still held the yellowy eyes of owls, charmed to blink every now and then. One frivolity well-hidden from the rest of the world.
The fabric rustled with soft woots as it was shifted past Al's hips, thighs, knees, and disposed of, into the pile which already contained Severus' black long-sleeved robe.
Assisted by Severus' touch, Al wiggled out of the remaining pieces of clothing, like a bird shedding old season's feathers, and settled, warm and naked into the eternal puzzle of figuring out the optimal angles of their limbs.
The night lights above their bed highlighted his hair with soft green, brought out the colour of his eyes and turned his skin sallow, to match Severus', as he leaned in for kiss.
In the brief moment before their lips met, Al's eyes glistened in the dark. Wide-open, ever-clear.
I've learned that family can be chosen. And you are mine.