Chrome Developer_Tools Extention

I need someone to build a Chrome extension . The extension should have some of the "Inspect Element" functionalists: 1. Click the "Select" button in the extension 2. Hovering an element gives it a light-green background. 3. Clicking a hovered element will write it's XPath to the extension box. This is a proof of concept. The developer that will achieve this will get more requirements as this is about 6 weeks worth of work (The entire project).