Colours¶

A book has two colour schemes: the page scheme, colors, for the paper and what is on it, in light and dark mode; and the panel scheme, panel, for what the book shows off its pages. accent and cover in book.json set the book's two main colours, which both schemes start from.

Page colours¶

colors sets the page scheme. Any colour left out keeps the style's own.

Colours are "#RRGGBB", or "#AARRGGBB" with alpha.

Key	What it colours
`paper`	The paper.
`text`	Body text.
`muted`	Quieter text: captions, counts, code.
`heading`	Headings and titles.
`accent`	Marks and rules on the page (the book's `accent` by default).
`link`	Links.
`panel`	Panels and slots on the page.
`line`	Frames and dividing lines.
`dark`	An object with the same keys, for dark mode (screen or handheld).

book.json

{
  "colors": {
    "paper": "#F1E7D0",
    "text": "#3B3026",
    "muted": "#8B7B66",
    "heading": "#2E241B",
    "link": "#5A3A8A",
    "panel": "#E6D8BA",
    "line": "#C4B08C",
    "dark": { "paper": "#1F222C", "text": "#D5D8E2" }
  }
}

Panel colours¶

panel, at the top of book.json, colours what the book shows off its pages: its tooltips, its celebration toasts and the build guide's panel on the HUD. Each colour left out takes on the book: a background from the cover colour, a gilt frame warmed by the accent.

Key	What it colours
`background`	The ground.
`frame`	The frame, and in toasts and the build guide's panel the slot outlines, rules and bars.
`title`	Names and headings.
`detail`	Quieter lines.

book.json

{
  "panel": { "background": "#281E18", "frame": "#FFE28C", "title": "#F2E6CC", "detail": "#A89A86" }
}

Before 2.0 this was colors › tooltip, which is still read when a book has no panel.

A category can give its own tab a colour with "color" in its file. See Categories.