Theme: how to choose "sub theme" version?

[aborruso]

Hi,
the cosmo theme has these 3 kinds of predefined styles.

Previously in quarto the default cosmo was the "1", in quarto 1.4 the default is "3".

Is there a way to set cosmo and one of these 3 sub settings?

Thank you

[mcanouil]

It's not a "mode" you can switch.
You need to use scss, see https://quarto.org/docs/output-formats/html-themes-more.html and https://quarto.org/docs/output-formats/html-themes.html.

At the moment, I don't know how to reuse $secondary, $dark, etc. from cosmo theme.
Edit: you can't.

Alternatively, if you need less control, you can use background, foreground, etc., yaml keys from navbar, see https://quarto.org/docs/reference/projects/websites.html#navbar.
So you can set background to primary, light, dark, etc.
Note that this will only change the navbar, nothing else in the theme.

[aborruso]

Thank you