I don't see auras, this article just explains what I know of them. I feel them, a totally different experience. Dark blue is the color of the 3rd eye or third chakra. Is he psychic or does he know what will happen in advance at times? Does he meditate? Blue is the color for someone who is a calming influence, who is very spiritual, who cares deeply about others. Maroon is a shade of red with brown in it. Red is a strong chakra color, ruling the root chakra, or 1st one. But usually muddy colors can mean a slight health issue. Or since it's the root chakra, he could be suffering from self-esteem issues. Has he been to a Dr. lately? I don't want to scare you though. Maroon is also a Scorpio color, is he Scorpio or does he have Scorpio planets? I don't like the black lines, where do you see them? Black usually means a weakness or beginning of an illness or a blockage of some sort. But it can be a blockage of chakra, the invisible lines closely surrounding our bodies. I'd like him to go for a physical, although the muddy red of the first chakra could just mean his confidence is deeply shaken from what's happening in his life right now. I wrote more about chakras, so you can apply what I said to the right ones, check here: https://hubpages.com/bodywork/Kundalini-Energy-And... This article is on a site called Exemplore.com. I'm not saying he's ill, but he may be weak in the two chakras that are maroon and near where you see the black lines. Read the chakra piece and see if that explains any more to you. If not, it may be time for a visit to the Dr. for a wellness check, before something develops.