[quote=Phoenix]
Yes, it's still open! Just note that it's probably going to be in a long process of development. We're still in the development of reorganizing Chakra. Look at my previous post to see what Tatsua and I have begun to brainstorm. Any opinions on that would be welcome. I'm interested in what you've proposed, though. Maybe they have tattoos or some such thing. Go further with that idea, though. I'd like to hear your clarifications and where we might be able to go with that.
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Yeah, I saw the post about chakras, but I'm still sort of confused as to how they work now, with your most recent idea, so I'm kind of holding off saying anything about that until I can understand it better. 

As for the markings, they would depend on the beast, if you go that route. Though, I think the markings should be used as hindrance to the missions. So here's the idea. The markings will glow a certain color, when chakra is used. This serves two problems. The first is that it lets the enemy know when the chakra is going to be used, and its bright so the ninja will stand out like a elephant in a dog parade. Maybe, the markings could be a display of power like the brighter the color, the stronger the user's chakra. Also, maybe it could be a meter too like if the persons reserves start getting low the colors dim?