Well, this is a another oldie that I pulled from the archives, but it fits the prompt so perfectly that I couldn’t resist.
Yellow sun, yellow moon,
Yellow ribbon on yellow balloon;
Yellow crayons for coloring,
Yellow bird that chirps and sings.
Yellow squash ripe on the vine,
Yellow daffodils — all mine.
Yellow hair, with cheeks so pink,
Yellow lemonade to drink;
Yellow duckies, yellow chicks,
Yellow grapefruit freshly picked;
Yellow butter drips and drops
From tender, yellow corn-on-cob.
Yellow curtains, crisp and bright,
Yellow anti-bug porch light;
But yellow has its ugly side:
Yellow fever; could have died;
Yellow-bellied, yellow streak,
Yellow-livered, backbone weak.
And sometimes yellow can’t be seen:
It hides in blue and turns to green.
If you want to participate in today’s prompt, you’ll find the details here.