Personally, I prefer purple. I think purple eyes are mysterious and noble.
Eyes are the doorway for someone's soul. You see how important it is to choose the right window glasses color? The color of one's eyes impress others at first sight. Here are the different impression on different eye colors.
1.Green.
If you have a fair or brown skin, you can choose green. Green lenses make you vibrant and cute. Your eyes will as deep as refined emeralds.But beware to wear them in proper place, otherwise you may be seen as odd.
2.Blue.
Blue senses make you an innocent and gorgeous blond. It is the color of the sky and the sea.Think of all the blond models, stars, celebrities and whoever is blond. This time you can choose to be a blue eye angel yourself.
3.Purple
Purple eyes are as mysterious and crystal as amethyst. It can also be as deep as the velvet dark night with shining stars.
4.Black
It is the color of the universe and the black pearl. Wearing black lenses makes your eyes a black hole, tempting people to look inside and explore in it.
Anyway, it's up to you.