Which colors should I use?
That's a personal decision. Regular crayons should work well, as should paints that don't contain too much water or heavy pigments. Try out what works best for you.

How to get the best results?
Use a sheet of paper underneath to prevent bleeding through.

Why are the books printed on 90 gsm paper?
After several tests, the paper is the best for coloring with crayons.

I have purchased the PDF file. What paper should I use for printing?
Do not use paper with an additional coating; normal 80 gsm paper is perfectly adequate. For designs with more intense colors, choose slightly thicker paper.

You refer to common memes; how about the credits?
I have tried to credit all sources of inspiration as best I can (as an academic should do). These are included in the PDF and in the books. If these are not the original sources, please let me know so that I can change this.

Anything more to consider?
The coloring templates are for personal use only. Please do not copy, sell, distribute or claim the illustrations as your own.