message: Fix day header color on hover/press (win)
diff: xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
  mc:Ignorable="d" d:DesignWidth="300"
  Margin="4"
  - AllowDrop="True">
  + AllowDrop="True"
  + Background="{DynamicResource Toggl.CardBackground}">
  <StackPanel>
  <Button Height="{StaticResource TimeEntryDayHeaderHeight}"
  Style="{DynamicResource Toggl.TimeEntryDayHeaderButton}"
  