`default_text_color`

[800020h]

Is your feature request related to a problem? Please describe.
A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]

can't see the text with dark backgrounds in books

Describe the solution you'd like
A clear and concise description of what you want to happen.

default_text_color in book.json

sets the default colour for text in entries (for md, json, and auto generated)

Additional context
Add any other context or screenshots about the feature request here.

https://discord.com/channels/688406873392676924/1401602888022888601

[800020h]

"text in entries" means text with a background of book_content_texture in this case