[Camaro_Corvette]

I'm quite sure that it is based on your post count. Some people don't have them because they have personalized status messages like me. Mine says, "DOMINATING" You have obviously not set one so you have the post count bar. Which grows and changes colors every time you post. I am quite certain that when you hit a 1000 posts (which will be soon) your grey bar will turn to a different color. You will level up per say. Understand.