best · sample · Opus 5.5 · trial 016 of 100

What the model said

Blue — specifically a deep, slightly green-leaning blue like teal or cerulean. It's the most commonly named favorite color across cultures, it's easy on the eyes, and it works equally well for a sky, an ocean, or a terminal theme.

That said, it's purely a matter of taste, so your answer is as valid as mine.