We have RadRibbonView. There is some elements in a RadTab, that are inside RadOrderedWrapPanel. If we set a theme to the RadRibbonView, it is not applied to the elements within the RadOrderedWrapPanel. Reason for declining: The RadRibbonGroup propagate its theme to its direct children, all nested elements in RadOrderedWrapPanel or custom panel/grid e.t should have set their theme using the attached property telerik:StyleManager.Theme which will be bound to the same theme as the RadRibbonView.