In order to achieve the desired appearance of RadScheduleView you need to modify its default Template. So, you need to create a Style based on the default one and modify the Border x:Name="NavigationHeader" inside RadScheduleView's ControlTemplate as needed. We have created a sample project that demonstrates the described above approach. Please, notice that Implicit Styles were used.
Hopes this helps.
Regards,
Nasko
Telerik
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