Examine source code of Surrender

{
  "theme": {
    "images": {
      "theme_frame": "Chains.png"
    },
    "colors": {
      "frame": "#f08282",
      "tab_background_text": "#dedada"
    }
  },
  "version": "2.0",
  "name": "Surrender",
  "manifest_version": 2,
  "description": "\"It is often safer to be in chains than to be free.\" Franz Kafka"
}