This question is a reaction to a hint in a comment on an answer of mine on this thread.

I'm a new user, and have been surprised not to find any explanation (in the FAQ, for example) of the significance of the blue background which some questions display with. The comment referred to suggests that popularity is a possible consideration, but I would appreciate a definitive explanation.

  • While at it, and not wishing to submit a further question, may I say that it was only through observation that I realised the significance of the green box against which some answer indications appear (my interpretation being that these are answers which have been accepted by the question poser). Commented Aug 10, 2011 at 2:46

1 Answer 1


The blue background is placed in those questions that are tagged with tags you have selected as favorites. One of my tag favorites is xcode and any question that was tagged with xcode appears with the blue background. It is a way to help you find those questions that are more relevant to your specific interests.

  • So you're saying it's viewer dependent? That others don't see blue where I do? I ask because I'm only a newbie here, and have yet to select tag favourites. Taking a closer look, it seems more as if the blue is added to questions which feature tags which I've used in my questions. You have certainly steered me in the right direction. Thanks for that. Commented Aug 10, 2011 at 15:33
  • 1
    It is viewer-dependent. It wouldn't surprise me if they had a mechanism to highlight questions if someone hasn't selected any favorites. Commented Aug 10, 2011 at 19:09
  • Awesome! Thanks for sharing that. I was thinking that's what it was, but wasn't sure.
    – daviesgeek
    Commented Sep 5, 2011 at 18:54

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