Chasing a Rainbow Spot

I noticed a bright splash of colors trembling right on the rug. Taking small, quiet steps, I waddled over to investigate. It was a dancing sliver of rainbow, painted across the pale carpet fibers by the bevel on the glass door. I leaned down slowly and tapped the edge of the red stripe with my flipper. It felt warm, but my flipper just turned red too! Then a gentle breeze swayed the sheer curtain, and the little rainbow slid onto a smooth glass marble lying by the baseboard. The marble glowed like a tiny lantern, and I sat beside it, quietly watching it shine.