theme.yaml

events/<event>/theme.yaml. Optional. A theme can restyle an edition but cannot set name or logo: identity belongs to the brand.

palette:
  light:
    primary: "#b3261e"
  dark:
    primary: "#ff8a80"

palette

Type object with light and dark maps · Optional

Same shape and keys as in brand.yaml. Values here win over the brand’s, for their scheme only.

light

Type map of palette key to CSS colour · Optional · Under palette

This edition’s light colours; missing keys keep the brand’s (then the engine’s).

dark

Type map of palette key to CSS colour · Optional · Under palette

This edition’s dark colours; missing keys keep the brand’s dark ones (then the engine’s).

background

Type file name · Optional

An image next to theme.yaml, shown behind the whole calendar under a wash of the page colour so text stays readable in light and dark mode. A soft texture or illustration works best; SVG, PNG or WebP.

doors

Type file name · Optional

Artwork next to theme.yaml, shown on locked doors, like wrapping paper. Open and solved doors stay plain. A small repeating pattern works best.