The official threads are the threads you want the users to notice right away. In my opinion, the current colors of the prefixes for those threads, which are supposed to be gold and silver respectively, fail to catch the common user's attention. This is because I think they are not very bright or even appealing colors. They don't fit in with the red and gray forum theme. Especially the silver [Official] prefix is poorly thought out in my opinion, it's the exact same shade of grey closed thread titles have. It spells out unimportant. Uninteresting. Nobody will read that.

What I propose is the following:

Change [Official Rules] to [Official Rules]

Change [Official] to [Official]

Primary red is a color that spells out danger, important, read this. Primary blue is also a very noticeable color. The same color scheme is used in the Admin and SMod user groups, so it makes sense to implement them to prefixes likewise. Here's a preview of what it'd look like in practice:

While I understand the meaning behind the current gold/silver color scheme, I believe red/blue would do a better job at grabbing an user's attention. If you have anything to add (other color preferences, any other ways to grab the user's attention) feel free to comment.