Ok, well to explain the green K, you are normally only green K if you are a Pacfan. They seem to our number regular boxing fans on this website so they either approve your comments or disapprove in which you are made red.
However they are almost extinct on this website since December 8 2012. But they do normally come back to wish bad luck upon Floyd Mayweather and other black fighters they typically dislike.
Have fun and welcome to BoxingScene.