Custom Google Sign-In button - iOS

I want to customize Google Sign-In button like below:- I have tried below links, but none of them helped really much:- How to customize google sign in button?https://developers.google.com/identity/sign-in/ios/ Could somebody please guide what I should do? I can't use Google+ Sign-In button because "Google+ Sign-In is deprecated". Edited:- I tried the code provided on below link:-https://developers.google.com/identity/sign-in/ios/sign-in#add_the_sign-in_button