How to style the focused ListViewItem in a ListView - maui

Question

I have a ListView in a dotnet MAUI Windows app with a custom viewcell for the item template. I'd like to control how the focused item is styled. At the moment it becomes grey and has a little blue line on the left edge.
This is the code I am currently using:
<ListView
x:Name="ReportList"
ItemsSource="{Binding Resources}"
SelectedItem="{Binding SelectedResource}"
SeparatorVisibility="None">
<ListView.ItemTemplate>
<DataTemplate x:DataType="vm:ReportItemViewModel">
<ViewCell>
<Grid ColumnDefinitions="*, *, *">
<Label Grid.Column="0" Text="{Binding Name}" />
<Label Grid.Column="1" Text="{Binding Size}" />
<Label Grid.Column="2" Text="{Binding Status}" />
</Grid>
</ViewCell>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
On the focused element I'd like to remove the blue line and change the background colour.
I've found some promising looking properties and styles while browsing through the default styles in a PR for the MAUI source code.
These properties include:
FocusVisualMargin
FocusVisualPrimaryBrush
FocusVisualPrimaryThickness
FocusVisualSecondaryBrush
I'm not sure how to use them in my code above, or even if these are available in the current release. Can I set these properties, is this the way to go to get complete control over how the focused item is styled, or is there another way?