I've just recently started development using Visual Studio 2010 Express for Windows Phone and I put in a ListBox. I can't seem to manipulate the formatting. No matter what I do, the background is black/gray, the selected items have a blue border, and there is padding between the items in the listbox (i'm using images). Here is my code:

Xaml:

<Grid x:Name="ContentGrid" Grid.Row="1">
    <Grid Name="gallery">
        <Grid.RowDefinitions>
            <RowDefinition Height="370" />
            <RowDefinition Height="150" />
        </Grid.RowDefinitions>
        <Border BorderBrush="Red" Width="450"  CornerRadius="4" BorderThickness="2" 
            Background="Red" Margin="10,30,20,10" Padding="6,6,6,6">
            <Image Grid.Row="0" Grid.Column="0" Height="360"  x:Name="imgPreview"/>
        </Border>
        <ListBox x:Name="lbScrollGallery" Grid.Row="1" Grid.Column="0" Padding="0"
              VerticalAlignment="Top" Width="450" SelectionChanged="ScrollerSelectionChanged" 
              d:LayoutOverrides="HorizontalAlignment" ScrollViewer.HorizontalScrollBarVisibility="Hidden">
            <ListBox.ItemsPanel>
                <ItemsPanelTemplate>
                    <StackPanel Orientation="Horizontal"/>
                </ItemsPanelTemplate>
            </ListBox.ItemsPanel>
            <ListBox.ItemTemplate>
                <DataTemplate>
                    <Image Width="100" Height="100" Stretch="Fill" Name="imgSource" 
                       VerticalAlignment="Center"
                       Source="{Binding Path=Url}" />
                </DataTemplate>
            </ListBox.ItemTemplate>
        </ListBox>
    </Grid>
</Grid>

Is there some way I can customize the listbox? Like change the background to red or make the padding between different items 0?