Well your aura is like the vibe you give off. I think just meditation should make it clearer... Well not clearer, butmake the colour more vivid or pure. The aura is a radiance of who you aare, you personality and feeling merged into one glow. I can't see an aura, but I and others can feel them. Its like the radiance given off by a happy person that spreads their pure joy or the depression of one that saddens others. I think that's the beat way I can explain aura.
I'm not sure, but it almost sounds like you were led to the assumption aura is more of an energy. It giant really a controllable energy, merely a radiance or presence. The energy of a the spirit is called chi by some or qui byothers. Also the energy of a body would be vitality or stamina.
Some fiction like the pokemon franchise among others use aura as energy when it really isn't. This misuse of terms is also seen in other anime like naruto where chakra is considered energy, when really the chakras are more like gathering pools or paths of energy.
If I I didn't answer your question well enough I'm sorry, but this was the best response I could come up with.