Question regarding interesting tags

In stackoverflow when you have added some tags as interesting tags then questions with those tags will be highlighted (different background color). Is this feature here in askbot? I tried to add some interesting tags but it doesn't act like that way I think.

This feature is not available in Askbot core as of now, but you can customize for your needs easily, by learning CSS and applying it on the templates.

You need to look into the Askbot code.