Is there an extension to hide downvotes, ungray all comments, and hide karma count? If not, I'm going to write one. I know it's just an errant downvote, and p

Is there an extension to hide downvotes, ungray all comments, and hide karma count? If not, I'm going to write one. I know it's just an errant downvote, and people can feel however they want. But the information is no longer useful.