Hi Terry,
I am afraid the Flat Style property and other visual properties for Scrollbars are not available now. The only workaround is to add a manifest file to your project so that the Scrollbars will follow the theme used in the system. We will make a feature request on this and will try to implement at the earliest.
Please refer the attached sample for incremental zoom out on both the axes. There is no direct property to set this and hence I have created a workaround by overriding the base class.
Please let me know if this helps you.
Regards,
Geetha
F38507.zip