We, people with brown eyes are the luckiest because all colors suit us. But it also depends on the color of your skin. And to make your eyes pop, the best is to stay away from colors similar to your iris and take exactly theopposite.
In any case, I use lots of mauves, purples, lilacs, pinks, champagnes, etc.
Navy blue makes my eyes look lighter and they pop out a lot.
I also like bronzy colors, browns, dark green, etc. I love greys but I avoid thema bit because they make brown eyes look a bit tired in my opinion.
Sofia