Babies with colic are VERY fussy to the point where you cannot soothe them to stop crying. Im sure its just the gas making him a lil fussy. I would recommend trying to switch formula. Maybe a sensitive brand for gassy babies. You can ask your pediatrician what he/she suggests as well. Gripe water is great also to help his tummy settle in the meantime.
The formula could not be setting well with his stomach