Styling container

[TimUntersberger]

How can I change the background color of the following horizontal container?

  let container = ui.horizontal(|ui| {
    ui.image(..., Vec2::new(32.0, 32.0));
    ui.label(...);
  });

For more context:

I have a search result which is a list of items. I want to highlight the background of the focused item with a different color.