CSS rules to apply to each page:
background-color: var(--background);
Extra CSS rules for tile content:
.tile-html h1,h2,h3,h4,h5,h6 { color: var(--headings); }
Color variables:
{ "primary": "#ff0000", "secondary": "#00ff00", "medium": "#0000ff", "headings": "#ff00ff", "background": "#ffffff", "text": "#000000" }
Metadata (used for generating theme picker UI):
{ "name": "My Theme", "colors": ["#ff0000", "#00ff00", "#0000ff"] }