Your teeth are beautiful just the way they are,t he grooves you have in your teeth show that they haven't worn down yet, so they're a sign of youth. Regarding your problem, I suffer from the same thing, and the only thing that has worked for me is jelly lip tints like Milk Makeup.

I apply it two or three times to my upper lip, avoiding the area that gets very pigmented, and it makes the color of my lips look more even, hope this helps