bug: Missing CSS variables

[bouceka]

Provide environment information

Novel.sh Browser: Brave

Describe the bug

Novel is missing CSS variables --novel-stone-###. In the documentation, we are supposed to add colour variables, but the novel stone colours are missing. Also, then I noticed the variables are missing in the code and on the Novel.sh example as well. I have no way of finding out the colour code anyhow.

Link to reproduction

Novel.sh

To reproduce

1. Open Novel.sh
2. Scroll down to the checklist
3. The checkboxes are "invisible"
4. Click beside the list of items on the left, and you can check the boxes.

Additional information

No response