I cannot see what you see on that specific one so I went looking.
On Sports.SE I have a few tags I like to avoid, which means I see the Questions list like this:
If this is what you are seeing then it is because of your Ignored Tags list. Can you guess what mine are on Sports? :-)
If however you see yellow colour coding, like this:
Then it is from having a gold badge for that tag. (Earn at least 1000 total score for at least 200 non-community wiki answers in the tag)
And if you see pink colour coding, that indicates deleted posts - you have enough rep to see them. I'm not going to copy any up here, but they should be obvious.