[Forum Request] Marking useful post in threads

If possible can you give users the ability to mark best answers (something like “vote as best answer”) on their threads so that those posts will have a yellow (or maybe green like in Answerhub) background to show that its the best answer to the question? It will make future users to get their answer more quickly. Moderators should have the ability to edit this status too, so if a user dont mark a post as answer but still its the best answer, then the mod can mark it.