Your projects on itch.io are fascinating. Actually I am asking about if I can use generated SVGs out of your projects to make a coloring book and sell it on Amazon? I know you mentioned using your generated images in games, but not books. Have a beautiful day.
No, sorry, it's not something I am willing to endorse. It's not a question of games vs. books, though. It's just taking SVGs produced by my generators and selling them more or less "as is" doesn't sound like a fair commercial use of free tools (unlike creating illustration for original texts, for example).
From https://watabou.github.io/faq.html:
Please note that I strongly disapprove abusing this "license" by selling generated maps.
Thank you very much, I felt it is not fair too, that is why I was asking. I respect your decision.
You can think of it for yourself to publish coloring books for both adults and children on Amaon KDP (kindle direct publishing). You can produce a pdf for the book and another pdf for an attractive cover and upload them. I already done that for several books. I can provide help for FREE. Again, your generated art is really amazing.