For people despairing about their ability to score on this quiz asking such simple things as what color is the S3 icon. The quiz is using the Cloud Formation Designer icons not the ones you see every day in the console or in the icon asset pack from the AWS site you might be using in your architecture diagrams. So unless you spend a load of time using that to build your CFTs rejoice you shouldn't be surprised you're getting them wrong since they are not consistent across those locations.