How to change / customize the icon for a pegman on Google Maps?

I have searched around stackexchange but I only found questions / answers for changing pegman location. Is there a way to change the original image? I tried to influence the styling like this:

#map-canvas > div > div:nth-child(8) > div:nth-child(2) > div:nth-child(4) > img:nth-child(1) {
    background:url(images/man.jpg);
  }

      

        
        
        
      

    

but it doesn't show any changes. I also can't find it here: https://developers.google.com/maps/documentation/javascript/reference#StreetViewService