Specyfing different theme colors in manifest for dark mode

[DamianGlowala]

As per note in this section:

... it would be a nice addition to be able to adjust for the dark mode. Not sure which properties can be adjusted this way though (whether it is only the theme_color and background_color or other as well).

[userquin]

Right now there is no way to add theme variants to webmanifest, you can only create them.

We have it working in elk.zone GH repo with 2 web manifest per locale (i18n + theme variants): https://github.com/elk-zone/elk/blob/main/modules/pwa/i18n.ts

You need to disable manifest entry (manifest: false) and register them manually:

• https://github.com/elk-zone/elk/blob/main/config/pwa.ts#L14
• https://github.com/elk-zone/elk/blob/main/composables/setups.ts#L55-L62