ColorSnip от wioolea

ColorSnip is a vibrant Firefox extension that lets you snatch colors from any webpage element with a single click, bringing a burst of pop-art energy to your browsing. Pick colors directly from text, backgrounds, or borders, then view their hex and RGB codes in a bold popup, where you can copy them to your clipboard or save them for later. Your color collection is stored locally, making it easy to revisit or clear as needed.