It's funny you mention that — the author of Kid Pix wrote about the motivation around his app and he specifically calls that out as well:

"I didn't want to use pull-down menus for this because, among other reasons, Ben had trouble with them. " [http://red-green-blue.com/kid-pix-the-early-years/]

I tried to stick to and follow as many of the directives he has listed with Kiddo Paint.