Your aura doesn't have a specific color. The color changes with your mood, and what you're feeling is reflected through the colors. It doesn't remain one color all the time. If you want to see your aura, you can place your hand on a plain background. Some say that a white background works best for them, but some say that a black or darker background works best. Lay your hand flat on the surface and focus on a point just past your hand. After a while a thin white band will appear. If you look past it, a colored band will appear. This takes a lot of practice, and even after a long period of practicing, it is still very difficult. Don't expect results the first time you try.