Create a theme

Themes live in src/codedown/assets/themes/.

Each theme has:

• a TOML descriptor (metadata + which CSS file to use)
• a CSS file (your palette via CSS variables)

1) Create the TOML

Create mytheme.toml:

name = "mytheme"
css_file = "mytheme.css"
code_theme = "monokai"
version = "1.0.0"

Field meaning:

• name: the theme id you pass to -s (for example -s mytheme)
• css_file: the CSS file next to the TOML
• code_theme: Pygments style name for code blocks

2) Create the CSS

Create mytheme.css:

:root {
  --page-bg: #ffffff;
  --page-fg: #0f172a;
  --accent: #2563eb;
}

The shared layout/typography lives in base.css. Your theme CSS should focus on variables.

3) Use it

code-down input.md -s mytheme