Local custom colors, no Calendar data writes.

Calendar Palette Pro adds custom colors in your browser and keeps saved palettes on your device.

No separate Google login

Calendar Palette Pro does not ask you to sign in with Google inside the extension and does not use Google OAuth.

No Calendar API writes

The extension applies local visual overlays in desktop Google Calendar. It does not create, edit, delete, or recolor events through the Google Calendar API.

Browser-local storage

Saved colors and local color preferences are stored in Chrome extension storage on your browser profile.

Data handling

The extension reads the visible Google Calendar page so it can add custom color controls and apply local color styling. It stores saved colors and extension settings in browser-local extension storage.

The extension does not sell data, does not use data for advertising, and does not transfer calendar data to a remote service.

For support, use the Chrome Web Store support link.