In order to change your eye color without colored contact lenses. First, change your shirt. This helps immensely for those with green or hazel eyes. Second, change your makeup. I mean, combined the help of mascara, eyeliner and eye showdow will achieve an alteration, particularly when your color assortment is appropriate.
Third, if you really hate your eyes color, you can take iris implant into consideration. You need to consult an ophthalmologist. He can give advices based on your needs and budget. Certainly, consider surgery very seriously, in which you will suffer surgery risks and a long recovery period.
Another way is to choose opague contact lenses, then you can enhance your natural eye color by a green or brown lenses. If your doctor has some trial lenses, you can see what you look like with them.