Harmony and relaxation with Coloring-for-Adults.com: Coast coloring page – modern online coloring by numbers and book for download and print for adults. The artists skillfully expressed the emotions of the drawing through color combinations. Paint according to the finished sample or create your own version. Save the illustration or share the result with your friends. This can be done directly through the site: click “share”. Get inspired! Permission: Creative Commons Attribution-NonCommercial 4.0 License. Artist: Persimmons Studio.