New helper for dark mode

Dark mode is becoming increasingly popular in theme design. The developer currently has three options in this case:

  1. Light or Dark mode.
  2. Light and Dark mode with switch.
  3. Dark mode depending on operating system preferences.

So, I suggest adding a {{@site.dark}} helper. The developer could (at his discretion) use this for one of three behaviors.

It would be convenient for both - Ghost users and developers to be able to “switch” in the Ghost admin to the dark theme mode.

Example Code:

<body {{#if @site.dark}}class="dark-mode"{{/if}}>