How do you organize client palettes securely? (I built a local tool to stop losing colors)

Whenever I’m gathering references for a branding project—like some packaging concepts I was doing recently—I constantly find amazing color combinations. My old workflow was taking messy screenshots or using basic browser pickers that only copy one hex code at a time. I wanted something that acted like a sketchbook for colors, so I ended up coding a Chrome extension (Color Picker by Ceres). It lets you build and save multiple palettes (up to 32 colors each) directly inside the browser dropdown. You can add colors over time, and when you are ready to work, export the whole palette to a file like CSV or XLSX. The best part for client work is that it’s 100% local—no accounts, no servers, and no data is sent anywhere. It's completely free on the Chrome Web Store. For those of you who hoard visual inspiration, how do you currently keep your color schemes organized and secure before moving them into Illustrator/Figma?