Add Conditional formatting to the Slicer Visual, to enable highlighting the Slicer Visual when filtered/not filtered

The more slicers that are added to a report (e.g in an array of slicers or a slicer menu) the harder it is for the user to have an overview regarding what slicers have selections made (i.e. that are filtered/not filtered).

I suggest that conditional formatting is added to the Slicer Visual in order to make it possible to change the Slicer header, Items, Title, Background and Border (and why not shadow, while we are at it, that could enable a cool effect) of the slicer visual based on the filtered/not filtered status.