There seems no way to change the color of eyes. The eye color is determined by pigmentation of iris, which is determined by gene got from parents. The only way so far I know is wearing color contact lenses. It is the easiest way and also the cheapest way. Wearing color contact lenses could enlarge and refresh the look of your eyes. And you can change the color easily according to your different clothing and needs. But the more the color is similar to your eye color, the more natural it looks. If you need to attend any formal situation, it would be more natural to choose black colored contact lenses. Why don't you have a try? There are many on line eye shops, providing various colors and patterns. Order the ones you liked. After you received, you can have a try. If you don't like them, you can just return and get refund. Meanwhile, the price of on-line shops is much cheaper! With some ongoing promotion activity, you can even get them for free. Have a try and you will love it.