Beamer reference from [here](https://quarto.org/docs/reference/formats/presentations/beamer.html) does not list the `theme` format option, but it does exist, i.e. the following works:

```
format:
  beamer:
    theme: Madrid
```

The reference should be updated to include `theme`.
cscheid
2022-09-01T21:31:41Z
nikcleju
enhancement yaml-validation
v1.3
closed
Beamer reference does not list `theme` format option
https://github.com/quarto-dev/quarto-cli/issues/3377