Color Picker is a Firefox addon that streamlines the color selection process through a user-friendly interface. The tool features a stylish popup that appears upon clicking the toolbar icon, showcasing a layout with four distinct sections to enhance usability. The top toolbar includes three functional buttons, while the central color-palette icon launches the native color picker UI. This allows users to select and customize colors easily, with the selected color values displayed in six different formats in a side table.

To get started, users must click the 'Basic colors' section upon the first use to enable color selection and saving functionalities. The bottom of the UI presents a history of selected colors in solid circles, allowing for quick access to previously chosen shades. Users can also clear their color history with a dedicated button. It’s important to note that this addon does not support color picking from web pages, focusing solely on color selection within its interface.