Colin & Samir are the thinking creator's creators: restrained, editorial, no MrBeast theatrics. We ran two of their thumbnails through Thumbly Score to see whether good taste actually wins, or just feels nice.
MrBeast spends millions getting thumbnails right. We scored two of his biggest ones with Thumbly, applied the fixes it suggested, and re-scored. Here's what held up, what we'd change, and what you can steal.
Most thumbnail advice is surface-level: 'use bright colors' and 'add faces.' Here's what's actually happening in your viewer's brain during the 1.3 seconds they decide whether to click.