Examine source code of Kaneki Animated

{
  "name": "Kaneki Animated",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "kaneki.gif"
    },
    "colors": {
      "frame": "rgba(250, 164, 58, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(247, 202, 139, 0.48)",
      "bookmark_text": "rgba(0, 0, 0, 1)",
      "toolbar_field": "rgba(255, 111, 0, 0.24)",
      "toolbar_field_text": "rgba(250, 103, 103, 1)",
      "tab_line": "rgba(235, 60, 47, 0.37)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{9f8572c5-3e6e-418d-b965-04aff1e852a0}"
    }
  }
}