### Bug description

The color of headings for the cerulean theme work properly in 1.3.361 but not 1.4.119.

### Steps to reproduce

To reproduce render this `.qmd` document:

``` r
    ---
    title: "Untitled"
    format: 
      html:
        theme: cerulean
    ---

    ## Quarto

    Quarto enables you to weave together content and executable code into a finished document. To learn more about Quarto see <https://quarto.org>.

    ## Running Code

    When you click the **Render** button a document will be generated that includes both content and the output of embedded code. You can embed code like this:

    ```{r}
    1 + 1
    ```

    You can add options to executable code like this 

    ```{r}
    #| echo: false
    2 * 2
    ```

    The `echo: false` option disables the printing of code (only output is displayed).
```

### Expected behavior

Expected behavior is what 1.3.361 produces:

<img width="697" alt="quarto_1 3 361" src="https://github.com/quarto-dev/quarto-cli/assets/14161912/38e4fa00-66c2-48f2-a7ae-4212eaaaf087">


### Actual behavior

Actual behavior (1.4.119)
<img width="733" alt="quarto_1 4 119" src="https://github.com/quarto-dev/quarto-cli/assets/14161912/47eb32dc-0e3d-4f59-ae08-ea397c54c508">


### Your environment

-IDE RStudio Version 2023.03.1+446 (2023.03.1+446)
-OS  macOS Ventura 13.3.1 (a)

### Quarto check output

``` bash
joycerobbins@MacBook-Pro ~ % quarto check

[✓] Checking versions of quarto binary dependencies...
      Pandoc version 3.1.2: OK
      Dart Sass version 1.55.0: OK
      Deno version 1.33.2: OK
[✓] Checking versions of quarto dependencies......OK
[✓] Checking Quarto installation......OK
      Version: 1.4.119
      Path: /Applications/quarto/bin

[✓] Checking basic markdown render....OK

[✓] Checking Python 3 installation....OK
      Version: 3.11.2
      Path: /opt/homebrew/opt/python@3.11/bin/python3.11
      Jupyter: (None)

      Jupyter is not available in this Python installation.
      Install with python3 -m pip install jupyter

[✓] Checking R installation...........OK
      Version: 4.3.0
      Path: /Library/Frameworks/R.framework/Resources
      LibPaths:
        - /Library/Frameworks/R.framework/Versions/4.3-arm64/Resources/library
      knitr: 1.42
      rmarkdown: 2.21

[✓] Checking Knitr engine render......OK
```
dragonstyle
2023-06-03T14:26:15Z
jtr13
bug
v1.4
closed
Cerulean theme doesn't work properly in pre-release 1.4.119
https://github.com/quarto-dev/quarto-cli/issues/5801