Crayons are ??
Recolor is all around a great coloring app. This is definitely the best of its kind on the App Store. I recommend buying the full access version- thats where the fun really starts. For my coloring style, I use the crayons to create lighting effects, and add highlights and shadows to create depth and detail. However, crayons have this very clever and useful mechanic of not coloring over lines and into different areas, a mechanic that usually is beneficial, but is very limiting when trying to color in FRONT of the picture i.e. I wanted to paint rays of sunshine coming down in front of a face I was coloring, but it looked sloppy. Adding a button that allows for crayons to temporarily paint over black lines is something that every user would find useful. Just my 2 cents.
Mrs. Dental Floss about
Recolor - Coloring Book, v4.0.1