 for different colour options (where available),
 e.g. list(fill_colour = "viridis", stroke_colour = "inferno")</p></td>
    </tr>
    <tr>
      <th>na_colour</th>
      <td><p>hex string colour to use for NA values</p></td>
    </tr>
    <tr>
      <th>legend</th>
      <td><p>either a logical indiciating if the legend(s) should be displayed, or
a named list indicating which colour attributes should be included in the legend.</p></td>
    </tr>
    <tr>
      <th>legend_options</th>
      <td><p>A list of