Colin Farrell Sports Gray Hair in Venice

Colin Farrell checks the GPS on his phone while taking a stroll on Thursday (June 5) in Venice, Calif.

Last weekend, the 38-year-old Irish actor celebrated his birthday. Happy Belated birthday, Colin!

PHOTOS: Check out the latest pics of Colin Farrell

In case you missed it, check out a new still of Colin and his co-star Jessica Chastain kissing passionately for their new movie Miss Julie, which is still awaiting a release date in the U.S.

10+ pictures inside of Colin Farrell checking his phone in Venice…