Gold
James throws his head back in laughter, lips pulled into his gigawatt smile, and Sirius can't help the indulgent expression that takes over his own features.
James notices and his smile turns soft and quiet— the one he reserves only for Sirius.
"What is it?" he asks, and Sirius shakes his head, lips curling into a smile of his own. He reaches out and cups James' face, rubbing his thumbs over his cheekbones and tilting his head up so their gazes lock.
"You have beautiful eyes," he murmurs, adoration coiling in his chest at the soft pink that dusts itself across James' cheeks.
"Yeah?" he whispers, and Sirius hums in affirmation.
"Yeah." He places a little peck on the bridge of James' nose. "They're usually the colour of dark chocolate, but sometimes— like now— the sun hits them just right and then they look like pure molten gold."
He leans in, heart clenching at the way James' eyelids flutter shut, and kisses him; slow and unhurried, just a gentle brush of lips over each other that has both of them sighing into each other's mouths.
"I live for those rare moments," he says softly into the kiss. "For the gold in your eyes."