Art game at Coloring-for-Adults.com. Hairpin with dolphins coloring page – a useful anti-stress game for every day for adults. For print and online. The artists skillfully expressed the emotions of the drawing through color combinations. Paint according to the finished sample or create your own version. The finished harmonious and slightly magical picture can be saved electronically or shared on social networks with best friends and family. Permission: Creative Commons Attribution-NonCommercial 4.0 License. Artist: Persimmons Studio.