Eugenie Bouchard's eyes are light blue according to this source. Not much else seems to have been written about the young tennis player's eye colour.
I'd never heard of Eugenie Bouchard until I researched this answer, I was surprised to find out just how famous she is!
Here are some other facts about "Genie" (as her friends like to call her), which I also found interesting:
• She is 20 years old and from Canada.
• Right now, she's ranked world No. 7.
• Her parents are Michel Bouchard who is an investment banker, and Julie Leclair. She was brought up in Montreal and she has a twin sister called Beatrice. She also has two little sisters.
• During Wimbledon 2014 Eugenie Bouchard became the first ever Canadian to reach the finals of a Grand Slam in singles.
• Eugenie started playing tennis when she was just five years old.