BorderBush on bottom of RibbonTabItem (and Ribbon)

[scauthen]

I am trying to create a menu without the border on the top and bottom. In order to keep the Tab at the from having small notches (extension lines) at the bottom (see first image), I used the following Resource Style. This works great in removing the notches at the bottom however, how I have a border at the bottom which I would like to remove. Is this possible? Could you please advice?
Thank you so much for your time!

<SolidColorBrush x:Key="Fluent.Ribbon.Brushes.RibbonTabItem.BorderBrush" Color="#2b579a" />

Without Border:

With Border:

---

Environment

• Fluent.Ribbon V6.1.0.233
• Windows 10
• .NET Framework 4.5.2

[batzen]

Those notches shouldn't even be there.
Will have a look at this as soon as i got time.

[scauthen]

I found a work around by using the following code. Basically, I set the BorderBrush to White which matches the window area below the ribbon and then set the SolidBrushColor on the RibbonTabItem to the color of my Ribbon background.

<Style TargetType="{x:Type Fluent:RibbonTabItem}">
        <Setter Property="Height" Value="30" />
        <Setter Property="BorderThickness" Value="1,1,1,1" />
        <Setter Property="BorderBrush" Value="White" />
</Style>

<SolidColorBrush x:Key="Fluent.Ribbon.Brushes.RibbonTabItem.BorderBrush" Color="{DynamicResource ColorDark}" />

Thank you for the quick response!