<Submitted by TigerHeli>.
The borders serve two purposes:
Here is the recommended usage of the the green/yellow/red borders:
Some people might argue otherwise - but the unoffiicial Crutchfield forum policy is that questions are things that can be solved, i.e. "Why doesn't my amp turn on anymore?", and not things that are opinions "What head unit should I purchase?", so you may occasionally see a thread changed by a admin or moderator from a question to a discussion (or rarely, vice-versa). Currently, only the OP, moderators, and admins can change a thread's status or edit other member's posts - but anyone can Mark or Suggest As Answers.