wpftoolkit/ExtendedWPFToolkitSolution_35/Src/WPFToolkit.Extended/TimePicker/Themes/Generic.xaml

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                    xmlns:local="clr-namespace:Microsoft.Windows.Controls"
                    xmlns:chrome="clr-namespace:Microsoft.Windows.Controls.Chromes"
                    xmlns:coreConverters="clr-namespace:Microsoft.Windows.Controls.Core.Converters">

    <!-- =============================================================================== -->
    <!-- ResourceDictionary for TimePicker and related controls                          -->
    <!-- =============================================================================== -->

    <coreConverters:InverseBoolConverter x:Key="InverseBoolConverter" />
    <coreConverters:TimeFormatToDateTimeFormatConverter x:Key="TimeFormatToDateTimeFormatConverter" />

    <DataTemplate x:Key="DefaultWatermarkTemplate">
        <ContentControl Content="{Binding}" Foreground="Gray" Focusable="False" />
    </DataTemplate>

    <LinearGradientBrush x:Key="PopupDarkBorderBrush" EndPoint="0.5,1" StartPoint="0.5,0">
        <GradientStop Color="#FFA3AEB9" Offset="0"/>
        <GradientStop Color="#FF8399A9" Offset="0.375"/>
        <GradientStop Color="#FF718597" Offset="0.375"/>
        <GradientStop Color="#FF617584" Offset="1"/>
    </LinearGradientBrush>

    <LinearGradientBrush x:Key="PopupBackgroundBrush" StartPoint="0,0" EndPoint="0,1">
        <LinearGradientBrush.GradientStops>
            <GradientStopCollection>
                <GradientStop Offset="0" Color="#FFffffff"/>
                <GradientStop Offset="1" Color="#FFE8EBED"/>
            </GradientStopCollection>
        </LinearGradientBrush.GradientStops>
    </LinearGradientBrush>

    <Style x:Key="TimePickerToggleButtonStyle" TargetType="ToggleButton">
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="ToggleButton">
                    <Grid SnapsToDevicePixels="True">
                        <chrome:ButtonChrome x:Name="ToggleButtonChrome"
                                             CornerRadius="0,2.75,2.75,0"
                                             RenderChecked="{Binding IsOpen, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=local:TimePicker}}"
                                             RenderEnabled="{Binding IsEnabled, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=local:TimePicker}}"
											 RenderMouseOver="{TemplateBinding IsMouseOver}"
											 RenderPressed="{TemplateBinding IsPressed}" >

                            <Grid>
                                <Grid.ColumnDefinitions>
                                    <ColumnDefinition Width="*"/>
                                    <ColumnDefinition Width="Auto"/>
                                </Grid.ColumnDefinitions>

                                <ContentPresenter HorizontalAlignment="Stretch" VerticalAlignment="Stretch" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />

                                <Grid x:Name="arrowGlyph" IsHitTestVisible="False" Grid.Column="1" Margin="5">
                                    <Path Width="7" Height="4" Data="M 0,1 C0,1 0,0 0,0 0,0 3,0 3,0 3,0 3,1 3,1 3,1 4,1 4,1 4,1 4,0 4,0 4,0 7,0 7,0 7,0 7,1 7,1 7,1 6,1 6,1 6,1 6,2 6,2 6,2 5,2 5,2 5,2 5,3 5,3 5,3 4,3 4,3 4,3 4,4 4,4 4,4 3,4 3,4 3,4 3,3 3,3 3,3 2,3 2,3 2,3 2,2 2,2 2,2 1,2 1,2 1,2 1,1 1,1 1,1 0,1 0,1 z" Fill="#FF000000"/>
                                </Grid>
                            </Grid>
                        </chrome:ButtonChrome>
                    </Grid>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

    <SolidColorBrush x:Key="ListItemHover" Color="#FFE7F5FD"/>

    <Style x:Key="TimeItemStyle" TargetType="ListBoxItem">
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="ListBoxItem">
                    <Border Name="Border" SnapsToDevicePixels="true">
                        <ContentPresenter Margin="4" />
                    </Border>
                    <ControlTemplate.Triggers>
                        <Trigger Property="IsMouseOver" Value="True">
                            <Setter TargetName="Border" Property="Background" Value="{StaticResource ListItemHover}" />
                        </Trigger>
                        <Trigger Property="IsSelected" Value="True">
                            <Setter TargetName="Border" Property="Background" Value="{DynamicResource {x:Static SystemColors.HighlightBrushKey}}" />
                            <Setter Property="Foreground" Value="White" />
                        </Trigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

    <!-- =============================================================================== -->
    <!-- TimePicker                                                                      -->
    <!-- =============================================================================== -->

    <Style TargetType="{x:Type local:TimePicker}">
        <Setter Property="WatermarkTemplate" Value="{StaticResource DefaultWatermarkTemplate}" />
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type local:TimePicker}">
                    <Border>
                        <Grid>
                            <Grid>
                                <Grid.ColumnDefinitions>
                                    <ColumnDefinition Width="*" />
                                    <ColumnDefinition Width="Auto" />
                                </Grid.ColumnDefinitions>
                                <local:DateTimeUpDown x:Name="PART_TimeUpDown" BorderThickness="1,1,0,1"  
                                                      ContextMenu="{TemplateBinding ContextMenu}"
                                                      AllowSpin="{TemplateBinding AllowSpin}"
                                                      Format="{TemplateBinding Format, Converter={StaticResource TimeFormatToDateTimeFormatConverter}}"
                                                      FormatString="{TemplateBinding FormatString}"
                                                      ShowButtonSpinner="{TemplateBinding ShowButtonSpinner}"
                                                      Value="{Binding Value, RelativeSource={RelativeSource TemplatedParent}}"
                                                      Watermark="{TemplateBinding Watermark}"
                                                      WatermarkTemplate="{TemplateBinding WatermarkTemplate}"/>
                                <ToggleButton x:Name="_timePickerToggleButton" Grid.Column="1"
                                              IsChecked="{Binding IsOpen, RelativeSource={RelativeSource TemplatedParent}}"
                                              Style="{StaticResource TimePickerToggleButtonStyle}"
                                              IsHitTestVisible="{Binding IsOpen, RelativeSource={RelativeSource TemplatedParent}, Converter={StaticResource InverseBoolConverter}}"/>
                            </Grid>
                            <Popup IsOpen="{Binding IsChecked, ElementName=_timePickerToggleButton}" StaysOpen="False">
                                <Border BorderThickness="1" Background="{StaticResource PopupBackgroundBrush}" BorderBrush="{StaticResource PopupDarkBorderBrush}" >
                                    <Grid>
                                        <ListBox x:Name="PART_TimeListItems" BorderThickness="0" Width="150" Height="130"
                                                 DisplayMemberPath="Display"
                                                 ItemContainerStyle="{StaticResource TimeItemStyle}"/>
                                    </Grid>
                                </Border>
                            </Popup>
                        </Grid>
                    </Border>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

</ResourceDictionary>