WPF: How to ignore defined style for concrete control - wpf

Question

I have the Rectangle control style (for the type of Rectangle) defined in resource dictionary and it reflects the style for a Menu control also.
How to ignore these settings for Menu and leave it for (just) Rectangle? - Drawing purposes in canvas .... The Rectangle control is added to canvas dynamically from code behind. In main window is dockpanel, grid, menu, textblock and canvas controls. Style for rectangle also harm style properties for Menu (needed to keep the default style).
Thanks for advice
Main window controls:
<DockPanel HorizontalAlignment="Stretch" VerticalAlignment="Stretch" LastChildFill="True">
<Grid DockPanel.Dock="Top">
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Menu Grid.Row="0" Grid.Column="0" Grid.ColumnSpan="3" HorizontalAlignment="Stretch" Height="21" Name="menu" Style="{StaticResource ResourceKey=menuStyle}">
<MenuItem Header="File">
<MenuItem Header="Open image" Command="{Binding DoCommand}" CommandParameter="OpenImage"/>
<MenuItem Header="Exit" Command="{Binding DoCommand}" CommandParameter="Exit"/>
</MenuItem>
</Menu>
<RadioButton Margin="5" Grid.Row="1" Grid.Column="0" Content="Text selection" GroupName="ObjectType" IsChecked="{Binding Path=ObjectType, Mode=TwoWay, Converter={StaticResource ResourceKey=RadioButtonTypeConverter}, ConverterParameter=Text}" />
<RadioButton Margin="5" Grid.Row="1" Grid.Column="1" Content="Picture selection" GroupName="ObjectType" IsChecked="{Binding Path=ObjectType, Mode=TwoWay, Converter={StaticResource ResourceKey=RadioButtonTypeConverter}, ConverterParameter=Picture}" />
</Grid>
<pt:PropertyControl DockPanel.Dock="Right" SelectedObject="{Binding SelectedObject}" MinWidth="150"/>
<TextBlock DockPanel.Dock="Bottom" Height="100" Margin="5" Background="#FFF9F9F9">
</TextBlock>
<Canvas Name="canvas" MouseLeftButtonDown="Canvas_MouseLeftButtonDown" Background="White" Width="{Binding ElementName=ImgEdit, Path=Width}" Height="{Binding ElementName=ImgEdit, Path=Height}" MinWidth="300" MinHeight="100" VerticalAlignment="Top" MouseMove="canvas_MouseMove" MouseLeftButtonUp="canvas_MouseLeftButtonUp" >
<Image x:Name="ImgEdit" Source="{Binding BackgroundImage}" HorizontalAlignment="Center" VerticalAlignment="Center" />
</Canvas>
</DockPanel>
Code of my Style resource dictionary:
<Style TargetType="{x:Type Rectangle}" >
<Setter Property="Fill" Value="Yellow" />
<Setter Property="Opacity" Value="0.2"/>
<Setter Property="StrokeThickness" Value="2"/>
<Setter Property="Stroke" Value="Red" />
</Style>