Atelier collection Omexco by Arte. You can order wallpaper from the Atelier collection of Omexco online with us! A modern and colorful collection in which special materials and applications are expressed. Designs Naturally Beautiful, Mademoiselle Tweed, Rainbow Raj, Unlimited, Extravaganza, Boro, Paper Art and Time-Lapse. Wallpaper collection Atelier Omexco by Arte.