Is there a way to turn off code highlighting and specify code block snippet font (foreground?) and background colors?

[emteelb]

I am trying to have code blocks in a presentation look like the code execution output in this screen grab, white font on black background:

I used the following theme override for the code execution output:

    execution_output:
      colors:
        foreground: white
        background: black

I have not figured out how to specify the font and background colors for code block snippets though. I can influence the colors by using the theme_name key in a theme override, for example, or by not specifying a code language after the starting three backticks (```) delimiter before a code block:

```
docker build --tag lb-vale .
```

...or by specifying that (only) line 0 be highlighted:

```bash {0}
docker images --filter reference=lb-vale
```

None of these achieve what I want though: being able to specify the font and background colors for code blocks (and turn off syntax highlighting).

Poking around, it does not seem like that code theme override keys support this. From clean.rs:

#[derive(Clone, Debug, Default)]
pub(crate) struct CodeBlockStyle {
    pub(crate) alignment: Alignment,
    pub(crate) padding: PaddingRect,
    pub(crate) theme_name: String,
    pub(crate) background: bool,
}

Thanks in advance for any help or guidance.