Wino-Mail/Wino.Calendar/Styles/DayColumnControlResources.xaml

<ResourceDictionary
    x:Class="Wino.Calendar.Styles.DayColumnControlResources"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:controls="using:Wino.Calendar.Controls"
    xmlns:data="using:Wino.Calendar.ViewModels.Data"
    xmlns:interfaces="using:Wino.Core.Domain.Interfaces"
    xmlns:local="using:Wino.Calendar.Styles">
    <!--  Top column header DayColumnControl  -->
    <Style TargetType="controls:DayColumnControl">
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="controls:DayColumnControl">
                    <Grid>
                        <Grid.RowDefinitions>
                            <RowDefinition Height="25" />
                            <RowDefinition Height="7" />
                            <RowDefinition Height="*" />
                        </Grid.RowDefinitions>

                        <!--  Name of the day. Monday, Tuesday etc. at the top.  -->
                        <TextBlock
                            x:Name="PART_ColumnHeaderText"
                            Margin="8,0,0,0"
                            FontSize="16"
                            TextTrimming="CharacterEllipsis" />

                        <Grid
                            Grid.Row="2"
                            Grid.RowSpan="2"
                            BorderBrush="{ThemeResource CalendarSeperatorBrush}"
                            BorderThickness="1,1,0,1" />

                        <!--  Border for today indication.  -->
                        <Border
                            x:Name="PART_IsTodayBorder"
                            Grid.Row="1"
                            Height="5"
                            Margin="2,0,2,0"
                            HorizontalAlignment="Stretch"
                            VerticalAlignment="Center"
                            Background="{ThemeResource SystemAccentColor}"
                            CornerRadius="2"
                            Visibility="Collapsed" />

                        <!--  Place where full day events go.  -->
                        <Grid
                            x:Name="PART_DayDataAreaGrid"
                            Grid.Row="2"
                            Padding="6"
                            BorderBrush="{ThemeResource CalendarSeperatorBrush}">
                            <Grid.ColumnDefinitions>
                                <ColumnDefinition Width="Auto" />
                                <ColumnDefinition Width="*" />
                            </Grid.ColumnDefinitions>

                            <Grid.RowDefinitions>
                                <RowDefinition Height="Auto" />
                                <RowDefinition Height="*" />
                            </Grid.RowDefinitions>

                            <!--  Day number  -->
                            <TextBlock x:Name="PART_HeaderDateDayText" FontSize="17" />

                            <!--  Extras  -->
                            <StackPanel Grid.Column="1" HorizontalAlignment="Right" />

                            <!--  All-Day Events  -->
                            <ScrollViewer
                                Grid.Row="1"
                                Grid.ColumnSpan="2"
                                VerticalScrollBarVisibility="Hidden">
                                <ItemsControl ItemsSource="{Binding EventsCollection.AllDayEvents, Mode=OneWay}">
                                    <ItemsControl.ItemTemplate>
                                        <!--  All-Day Event template  -->
                                        <DataTemplate x:DataType="interfaces:ICalendarItem">
                                            <TextBlock Text="{x:Bind Title}" />
                                        </DataTemplate>
                                    </ItemsControl.ItemTemplate>
                                </ItemsControl>
                            </ScrollViewer>
                        </Grid>

                        <VisualStateManager.VisualStateGroups>
                            <VisualStateGroup x:Name="TodayOrNotStates">
                                <VisualState x:Name="NotTodayState" />
                                <VisualState x:Name="TodayState">
                                    <VisualState.Setters>
                                        <Setter Target="PART_IsTodayBorder.Visibility" Value="Visible" />
                                        <Setter Target="PART_HeaderDateDayText.Foreground" Value="{ThemeResource SystemAccentColor}" />
                                        <Setter Target="PART_HeaderDateDayText.FontWeight" Value="Semibold" />
                                        <Setter Target="PART_ColumnHeaderText.FontWeight" Value="Semibold" />
                                    </VisualState.Setters>
                                </VisualState>
                            </VisualStateGroup>
                        </VisualStateManager.VisualStateGroups>
                    </Grid>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>


</ResourceDictionary>