How to change the spinner background with $ionicLoadingConfig

How I can change the dark background of the spinner in $ionicLoadingConfig?
This is my code in app.js.

want to eliminate teh dark background to no color

app.js

  .constant('$ionicLoadingConfig', {noBackdrop: true, duration: 1800,animation: 'fade-in',
   template: '<ion-spinner icon="crescent" class="spinner-energized"></ion-spinner> <br/> ...',
   
})