copy password to clipboard

The chrome extension does not automatically log me in to some websites, and you have thoughtfully provided a manual override for this situation.  However the only method I see of getting the password to the site is via the clipboard, and you have to reveal (show) the password in clear text before copy to the clipboard will work.  In addition to the existing show/hide button, I would like to see a copy button that copies the clear text password to the clipboard without having to reveal it to potential shoulder surfers.