Harmony and relaxation with Coloring-for-Adults.com: Coloring page Good avocado – modern online coloring by numbers and book for download and print for adults. Paint this black and white picture and create real beauty in this fragile world. Share your result on Pinterest or create many more masterpieces by starting to draw from the beginning. Permission: Creative Commons Attribution-NonCommercial 4.0 License. Artist: Persimmons Studio.