Color change in synoptic panel visual

Hi all,

I am right now using Synoptic panel visual which is really good one. I am currently working on a scenario where if I am selecting any of the value from a slicer then respective area should get green in colour whereas other areas should be gray coloured. Also if I am not selecting any of the value from slicer then on first view all areas should be in gray colour.

Currently I am giving gray colour to unmatched area and set green colour as default colour, I am unable to set gray if no value is being selected.

Stuck on this issue from very long time. 

Any help is appreciated.

Thanks in advance.