hey all. i've been in kempo karate for about 9 years, and obviously there was a much more rigid and orthodox system for everything (belt color, gi color, protocols, everythnig). well it's been some years since then and i've recently decided to join up for this acclaimed BJJ school near me. i went in for a free lesson and it seemed very lax, however, they did say i will need to buy a gi by next lesson. my question is.. can i use my black gi, or do i have to buy a new white gi? do gi colors have any emphasis in BJJ? this might seem like a totally stupid question to ask, but the instructor never said anything about it, and i can't seem to find any information on it. i just don't want to walk in there wearing a black gi or something if it means something specific in BJJ, heh.