Hi Brandon,

If you would like to modify the IG theme, changing the default style settings for that it will be the correct approach. Thank you for sharing. It will be helpful for other community members as well.

Hi Maria,

I've found  merged cells style in themes files. So i removed the background and set the border thickness to "1". It's works correctly. 

<!-- ********************************* MergedContentControl Style ********************************* -->
<Style TargetType="igPrim:MergedContentControl">
<Setter Property="FontSize" Value="11" />
<Setter Property="Foreground" Value="{StaticResource MergedContentCellForegroundBrush}" />
<Setter Property="BorderThickness" Value="1" />
<Setter Property="Padding" Value="4" />
<Setter Property="HorizontalContentAlignment" Value="Left" />
<Setter Property="VerticalContentAlignment" Value="Top" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="igPrim:MergedContentControl">
<Border x:Name="Bd" Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}">
<Grid>
<ContentPresenter VerticalAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" />
</Grid>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>

Thanks anyway.

Hi Maria,

Thanks for you reply. Yes ,this default style is nearly what i want. but i still want to using black themes in my solution.

Like below snapshot, this is IG WPF 12.1 style. Can you help me update 15.1 themes file to achieve it?

Thanks,

Brandon