A style of painting and sculpture that developed in the late 50's and 60's in Britain and the US, that uses mass production techniques or real objects in works that are generally more polished and ironic than assemblages is called

Pop Art

Explanation:

The artistic movement described is Pop Art. One of its most famous representants is the American artist Andy Warhol. Two of his most known paintings are the "Campbell's Soup Cans", which was painted in 1962 and "Marilyn Diptych", which was also painted in the same year and represents Marilyn Monroe.

yellow and blue because thats what i remember, im not sure tho