VRCMelonAssistant/ModAssistant/Styles/ListViewItem.xaml

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
    <Style TargetType="ListViewItem">
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="ListViewItem">
                    <Border
                                BorderThickness="{TemplateBinding BorderThickness}"
                                BorderBrush="{TemplateBinding BorderBrush}"
                                Background="{TemplateBinding Background}"
                                CornerRadius="2"
                                SnapsToDevicePixels="True">
                        <Border
                                    Name="InnerBorder"
                                    CornerRadius="1"
                                    BorderThickness="1">
                            <Grid>
                                <Rectangle
                                            Name="BorderBox"
                                            Visibility="Collapsed"
                                            Fill="Transparent" />
                                <GridViewRowPresenter
                                            Grid.RowSpan="2"
                                            VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
                                            SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
                            </Grid>
                        </Border>
                    </Border>
                    <ControlTemplate.Triggers>
                        <Trigger Property="IsMouseOver" Value="True">
                            <Setter Property="Background" Value="{DynamicResource ModListItemHighlighted}"/>
                            <Setter Property="BorderBrush" Value="{DynamicResource ModListItemHighlightedOutline}"/>
                        </Trigger>
                        <Trigger Property="ListBoxItem.IsSelected" Value="True">
                            <Setter Property="Background" Value="{DynamicResource ModListItemSelected}"/>
                            <Setter Property="BorderBrush" Value="{DynamicResource ModListItemSelectedOutline}"/>
                        </Trigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
</ResourceDictionary>