You can zoom in during touch color, which is nice. However, its impossible to paint in some closed areas as you could with a true paint bucket tool. This will confuse children who might know how to use a paint bucket tool.
If this feature were fixed, that would earn 4 stars.
Add this feature and you get 5 stars: ability to camera shoot and auto clean line art to use with touch paint or freehand.
Very nice concept overall.
Hdgtghdsfb about Color Mix & Paint - Princess