I need to display a field value available to `paragraph.html.twig` in `field.html.twig`.
I have a paragraph type called `buttoncontainer` with a field name called `field_background_color`. I have a paragraph type called `button` nested within that as per the attached screenshot. I need to make the `field_background_color` value available to `field.html.twig`.

Let's say `field_background_color` equates to `#333333`

In `field.html.twig` I want to do something like:

```
<div style="background: {{ color }};">
    {% for item in items %}
        {{ item.content }} 
    {% endfor %}
</div>  
```

Is this something that can be done with a preprocess function?

I tried

```
function mysubtheme_preprocess_paragraph(&$variables) {

  $paragraph = $variables['paragraph'];

  if ($paragraph->getType() === 'sidebar_button_repeater') {
    if (!$paragraph->field_background_color->isEmpty()) {
      $variables['color'] = $paragraph->get('field_background_color')->first()->getValue();
    }
  }
} 
```
...but it won't output the value in `field.html.twig`. The goal is simply to allow the user to determine the div background color behind the buttons they create.

[![enter image description here][1]][1]


  [1]: https://i.sstatic.net/eeCsD.png