I love the idea and would definitely recommend you develop it further. Have you seen the Climate Change Coloring Book? It did reasonably well on Kickstarter (raised $24k, although after printing and shipping that might not leave much) and I just got my copies about a week ago. I ordered 5 to give some as gifts. I'd easily order a few of yours and give one to my dad (former coder) and my kids.
https://www.kickstarter.com/projects/youaremyjoy/climate-cha...