Examine source code of trollian

{
  "name": "trollian",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "trollian.png"
    },
    "colors": {
      "frame": "rgba(133, 0, 0, 1)",
      "tab_background_text": "rgba(247, 19, 38, 1)",
      "toolbar": "rgba(133, 0, 0, 1)",
      "bookmark_text": "rgba(43, 0, 0, 1)",
      "toolbar_field": "rgba(194, 6, 0, 1)",
      "toolbar_field_text": "rgba(120, 0, 1, 1)",
      "tab_line": "rgba(43, 0, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{64fdfb57-eb61-446a-96bf-39a149462c39}"
    }
  }
}