Correct. Those are cigarette burns. The artist created the designs by holding a lighter on the ceiling.
http://www.yatzer.com/1975_olivier_kosta...ic_lighter
There's more pics in that link.
Quote:This is the case of Olivier Kosta-Théfaine. Living and inspired by the underground, he is a suburban kid that is totally in love with street culture and he uses it as the main element for his creations. Born in 1972, Olivier lives and works in Paris. He still maintains a romantic feeling about the everyday life in the suburbs and his view is poetic and groundbreaking. Glam and pop, loneliness and group codes, fashion aesthetics, street poetry, small urban details the can be transformed into something new, all form part of his universe. A universe that aims to use the language of the city and its suburbs in a modified personal way so as it can be understood by a broader public.
http://www.yatzer.com/1975_olivier_kosta...ic_lighter
There's more pics in that link.