Here is some info on Katie Holmes and some good pictures of her natural eye color...
Birth Name: Katie Holmes
Occupation: actress
Date of Birth: December 18, 1978
Place of Birth: Toledo, Ohio, USA
Height: 5'8"
Relations: Father: Marty (lawyer); mother: (homemaker); siblings: has three sisters and one brother; husband: Tom Cruise (actor)
Hair color: Brown
Eye color: Brown
Sign: Sagittarius
Favorite Food: Pretzels with Salsa
Dated: Joshua Jackson, Kevin Eastland
Education: Attended a Catholic all-girls school in Toledo; Deferred enrollment to Columbia University
To Get Glowing Like Katie's eyes :
Sweep a beige eye shadow across eyelids and into the crease, blending carefully to avoid unwanted lines. Next, apply a creamy white shadow under the arch of your brows. Line the lower rim of your lash line with a dark brown eyeliner and lightly blend. For more dramatic eyes you can add a few individual false lashes to the upper lash line before you apply your eye shadow. Once the false lashes are dry, you can apply a coat of dark brown mascara. For even more drama, use a full strip of false lashes instead of individuals.
Below is a sample of Katie Holmes different eye colors that appeared in animation.
Freshkon complex color lens color chart by Oculus.
Katie Holmes's favorite colored contact lens is green!!!