Formatting for active slicer

[ghaines]

I have a number of slicers on a page, many of them need to be drop down type, and it would be helpful to give the user some kind of feedback that a particular slicer is active.  I'm trying to make the background vary using a measure (adding a green tinge if the slicer is being used).  Is there a measure that I can use to detect if the slicer is actively being used?  ISFILTERED is only working if there is another filter acting on it from externally

IF(ISFILTERED('Regions'[Region]),
"rgba(192,255,255,0.2)",
"rgba(255,255,255,0.2)"
)

I also tried

SemiTransRegion =
VAR OptionsCount = COUNTROWS(ALLSELECTED('Regions'[Region]))
VAR SelectedCount = DISTINCTCOUNTNOBLANK('Regions'[Region])

RETURN
IF(OptionsCount <> SelectedCount,
"rgba(192,255,255,0.2)","rgba(255,255,255,0.2)")

I'm not even sure if each of these VAR is evaluating to "all options" or "selected options", since I can't see their values within the same slicer visual, and if I return the colour and the VAR in separate measures in a table, they do not change in the same way as they must be in the slicer, as I get results in the table that should be useful.

[ghaines · Accepted solution]

I found a solution using no background for the slicer, with a shape behind with colour defined using ISFILTERED.  I believe there is no solution to change the background directly as per the initial spec.