You do have the ability to change your eye colour at any time in a Apparel Shop by putting in Lenses. They can be Hazel, Gray, Green, Blue, Black, Yellow, Burgundy, Violet, Brown

When you start the game, unlike the previous Pokémon games, you will have the ability to pick your character as one of four different ones for each gender. These trainers have similar builds and costumes as you begin, but they vary in original hair colour and skin tone. The choice cannot be changed once selected so be sure to make the right choice when you begin.