Examine source code of Tribal Peacock

{
  "theme": {
    "images": {
      "theme_frame": "peacockfirefox.jpg"
    },
    "colors": {
      "frame": "#6d57e6",
      "tab_background_text": "#07804d"
    }
  },
  "version": "2.0",
  "name": "Tribal Peacock",
  "manifest_version": 2,
  "description": "Peacock feathers and a tribal design"
}