“NightOwl”是使用 FontVibe AI 创作的彩虹文字效果。绚丽的多彩虹色渐变文字特效，色彩过渡顺滑，棱镜般的光泽与欢快的多彩排版。

rendered as rainbow text effect — COLOR (mandatory): each individual letter must contain a complete ROYGBIV rainbow gradient top-to-bottom within itself — top=red, upper=orange, mid=yellow-green, lower=blue-indigo, bottom=violet. NOT one color per letter. NOT a gradient across the whole word. Every letter is its own complete rainbow. Full chroma Pride flag saturation — not pastel, not muted, not shifted to any single hue. YouTube search results page mockup in browser: multiple video thumbnails in a grid. One thumbnail is highlighted/enlarged — it features 'NightOwl' in rainbow balloon letters as the channel name, clearly standing out from surrounding thumbnails. The vivid ROYGBIV rainbow text contrast against other thumbnails shows why rainbow text improves thumbnail CTR. Thumbnail comparison showing rainbow text advantage in search feed.