From May 17th, 2012 to April 1st, 2015, 50% user give 4-star rating, 50% user give 1-star rating. for 4chan color users chrome extension.
Doesn't work.
Awesome, however, when clicking the ID of OP in the OP of the thread it colours the entire background of the site, and doesn't fill in just the post and subsequent posts. Probably because of the HTML5 change though. All in all solid and much appreciated...its about time we can easily filter out newfags.