Tab band sub-theme
Sets the sub-theme for a Panel Navigator's tab band. Only available if the Navigator type for the Panel Navigator is set to TabBand.
Sub-themes allow you to tweak the styling on control types within a component without having to change the main theme of the component. This approach is often preferable to manually changing the styling on individual controls by changing individual style settings. If you leave this property blank the default('base') sub-theme is used.