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About this Add-on
**I am not planning to update this add-on and expect it will lose compatibility with future versions of Firefox. Recommend users switch to Eyedropper (https://developer.mozilla.org/en-US/docs/Tools/Eyedropper) which has become a part of the built-in Firefox Developer Tools. Eyedropper works much like I designed ColorPicker. Having Firefox adopt this capability was actually one of my goals (now accomplished) and I see no need to continue maintaining this add-on.