`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

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default_text_color in book.json

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

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

[800020h]

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