In his Behance presentation, Romain shared both flat illustrations and real applications on mobile devices. He shared examples of his work presented on iPads, websites and real paper magazine.
One of his keys characteristics are colors and perspective. In fact, he loves to play with city landscapes, specially during night. In this way, he is able to experiment as much as possible with lights and colors. Also looking at his previous work, we can see an extensive use of violet and cyan colors, which are generally supported by dark blues tones.