Seeing Auras And Lucid Dreaming And An Empath

So yesterday I was practicing looking at my aura by putting my hand over a white sheet of paper and concentrating. I saw a shimmery green color. I did it again this morning, but this time I saw a blue. But it looked almost like an indigo color, and I couldn't see it as well. But in some places I see a little green. I had my lights on last night, but not this time, could that be a cause? Does your aura color change? And also, I've been trying to see the aura on a nonwhite background, but I'm having trouble seeing it. Why is that? Or am I concentrating too much? Do you have any tips?

I believe that I am a lucid dreamer. I've always been able to somewhat control my dreams. It's kind of like I can make up the story line, but then it kind of takes over. But I'm still able to make my own choices if it's from my point of view. Is this considered lucid dreaming? Can you explain what lucid dreaming is? I find in really interesting how I can control my dreams.

I've been reading a lot about empaths, what they are and what they do. What they are is what I am. I can feel the feelings of people around me, but it's a really weak connection. How can I make the connection stronger? Or what can I do to become stronger?

I just really want to know how to see the auras on a nonwhite background and why I saw two different colors on me? What do the colors mean? And what lucid dreaming really is. I'm not scared or anything about any of this, I just don't really know what I'm doing and I'm a little confused.

By the way I'm 15. I live with a family that wouldn't believe me if I told them I could do this. So I don't really have anyone I can go to, except you great people!