Hi there! Not sure if I'm misunderstanding how themes are specified, but I can't get them working at all.

`test.qmd`:

```
---
title: "Test test test"
author: "jimjam-slam"
format:
  html:
    theme: darkly
---

Check this out! Woo!
```

Output:

![image](https://user-images.githubusercontent.com/6520659/158100147-d75b1ee6-0839-4af5-966e-482c136a7917.png)

I'm also unable to specify an SCSS file in the `theme` option (it isn't recognised). However, the `css` option is:

`style.css`:

```
body: background-color: red;
```

`test.qmd`:

```
---
title: "Test test test"
author: "jimjam-slam"
format:
  html:
    css: test.css
---

Check this out! Woo!
```

![image](https://user-images.githubusercontent.com/6520659/158100282-0a1d738b-4281-48ec-a9bf-c62f66d621c3.png)

Is there something I'm missing? Thanks very much!

(I'm using Quarto version 0.9.76)

2022-03-14T03:34:43Z
jimjam-slam
closed
Can't modify Bootstrap theme at all
https://github.com/quarto-dev/quarto-cli/issues/415