Change background color for all slides

[tijeco]

When making slides, how do you change the background color for all slides? The only thing I see is that I can add a shortcode to each and every slide to change the background color. How can I do that for every slide?

[chrede88]

If non of the themes work for you, your only option is the shortcode. Which isn't any different if you use reveal.js on it's own.

Alternatively, you can overwrite the reveal.js css. See bottom of this example: https://raw.githubusercontent.com/wowchemy/starter-academic/master/exampleSite/content/slides/example/index.md
Here is the relevant css class from reveal.js: https://github.com/hakimel/reveal.js/blob/master/css/reveal.scss#L1106
Overwriting the css, will affect all slides, in all slideshows. Keep that in mind.