A set of geometry nodes to generate books along the y-axis of any sized plane.
Note: This is still a bit of a work in progress. There are some bugs that can happen if some of the settings deviate too much.
Sorry for the late response. It is possible to change the color of the books.
If you go into the Shader Editor and select the 'ArcLite Book Cover' material, there is a ColorRamp node with all of the possible book colors.
You can change any of their colors, and add or remove colors. The size of the color region will determine the probability of that color being chosen.
This is fantastic. Thank you so much, and thanks for making it public domain!
Thanks!