Costomising Toast in ionic native toast (ionic 3)

Ionic Native
1

I’ve been using import ionic-native/toast

{ Toast } from ‘@ionic-native/toast’;

want to show a toast with different background than the diffault
and using

this.toast.showWithOptions({
        message: "Please provide an E-mail address",
        duration: 2000, // 2000 ms
        position: "top",
        styling: {
          opacity: 0.75, // 0.0 (transparent) to 1.0 (opaque). Default 0.8
          backgroundColor: '#FF0000', // make sure you use #RRGGBB. Default #333333
          textColor: '#FFFF00', // Ditto. Default #FFFFFF
          // textSize: 20.5, // Default is approx. 13.
          cornerRadius: 16, // minimum is 0 (square). iOS default 20, Android default 100
          horizontalPadding: 20, // iOS default 16, Android default 50
          verticalPadding: 16 // iOS default 12, Android default 30
        }
      });

but got nothing as a toast