Sylvester Stallone and Jennifer Flavin Shop for Hair Dye, Tackle His Grays

Sylvester Stallone and Jennifer Flavin are doing a 180 after their recent divorce flap ... because now they look like a happy, funny reality TV family ... based on their most recent shopping trip.

Sly and Jennifer were back to doing couple things Tuesday, hitting up a Rite Aid in Beverly Hills and leaving the drugstore with a Just For Men hair coloring kit.

Sly's wife was openly carrying the $10.99 men's hair product in her hands as they strolled out into the parking lot ... it's definitely not what most would expect from a couple worth nine figures.

Sylvester's looking a little gray these days ... and it seems he's a DIY guy. Who needs Bev Hills docs when Rite Aid is around?!?