Where can I change the background color of the 'Added to Cart' notification? I don't see where it's being pulled from, and it's not part of my branding colors.

 The notification uses the same text and background color as the buttons on your theme. To change the color:

1. Sign into your Shopify admin
2. Go to 'Online Store' > 'Theme'
3. Select 'Customize'
   

4. Select the 'Theme settings' tab

   

         5. Select 'colors' > 'Buttons'