enhance: add HighlightTextBrush prop for HighlightTextBlock

src/Shared/HandyControlDemo_Shared/UserControl/Main/LeftMainContent.xaml

@@ -52,7 +52,7 @@
                                 <DataTemplate>
                                     <StackPanel Orientation="Horizontal">
                                         <Image Width="16" Height="16" Source="{Binding ImageName}"/>
-                                        <hc:HighlightTextBlock Margin="6,0,0,0" SourceText="{ex:Lang Key={Binding Name}}" QueriesText="{Binding QueriesText}" HighlightBrush="#f06632" />
+                                        <hc:HighlightTextBlock Margin="6,0,0,0" SourceText="{ex:Lang Key={Binding Name}}" QueriesText="{Binding QueriesText}"/>
                                         <Path Visibility="{Binding IsNew,Converter={StaticResource Boolean2VisibilityConverter}}" VerticalAlignment="Center" Data="{StaticResource NewGeometry}" Stretch="Uniform" Margin="10,0,0,0" Width="30" Height="14" Fill="{DynamicResource DangerBrush}"/>
                                     </StackPanel>
                                 </DataTemplate>