Commenting On An Article

I need help creating a page that gives website visitors the ability to comment on an article. The page should have a place for people to enter their name, their hometown, and their comment. There should be a short a CAPTCHA box so no spam gets posted and a profanity filter. Once people click "submit," the comment should get posted to the website. And every other box should be shaded with a light gray background so the comments are easy to read.