title: How to set the white color to google+ log in button?
body: <p>I am using google+ login for my app. I want to change the color of button from red to <a href="https://developers.google.com/+/branding-guidelines#matching" rel="nofollow">white</a>.Here is my xml code.</p>
  
  <pre><code>&lt;com.google.android.gms.common.SignInButton
      android:id="@+id/btn_sign_in"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_below="@+id/logo"
      android:layout_centerHorizontal="true"
      android:layout_marginTop="30dp" 
  
      &gt;
  </code></pre>