Below example of normal fill color.
$requests[] = new \\Google_Service_Slides_Request(array(
\'updateShapeProperties\' => array(
As you can withdraw the Slides API documentation, the only currently present interfaces for ShapeBackgroundFill
are propertyState
and solidFill
.
Indeed, even from the user interface it is not possible to implement a custom gradient as shape background fill.
If it is of any help: You can implement a ThemeColor.
If this does not solve your issue, you can file a feature request at Google Public Issue Tracker and hope that the feature will be implemented in the future.