The common eastern firefly (Photinus pyralis) emits a startlingly efficient yellow-green light at ~557 nm — a cold flame that warms toward orange with heat. This system frames that flash as a pre-1900 naturalist plate: classical entomological annotation set against a deep summer-night sky.

Warm point-lights scatter like a low constellation across near-black indigo, captioned in period serif. The mood is meadow-at-dusk: refined, scientific, and quietly luminous — never neon, never cold.