If you have wild colors caked on to your eyelids, that doesn't look natural. If your foundation is of a different color than your neck, that doesn't look natural. If you're wearing a bright red lipstick or dark lipstick, that obviously doesn't look natural.
It's not about being natural, it's about looking natural.
If applied well, what you've listed can indeed look very natural.
Seriously, just do whatever you want. Don't get caught up in this "natural" bs, although I also don't believe you should apply makeup like a clown.
I like no eyeliner. I don't mid a little bit of makeup and mascara, but honestly I like to see a women's true beauty. Nothing is more beatiful than a girl who is confident and feel's good with herself.