DuChateau Atelier Series. Seasmoke is the most popular style in the Atelier collection, requiring the highest number of processes for its creation. To simply describe Seasmoke as a grey floor would be a grave mischaracterization. There is a broad range of greyish tones that manifest from plank to plank. From soft light to dark tempest greys as seen in a storm. The final process is a dusting of white that gives a mist like quality to final visual. No other design is so aptly named as Seasmoke.