Examine source code of BrainyLogical

{
  "name": "BrainyLogical",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "bg-theme-brainy-logical-firefox.png"
    },
    "colors": {
      "frame": "rgba(4, 3, 9, 1)",
      "tab_background_text": "rgba(141, 124, 195, 1)",
      "toolbar": "rgba(4, 3, 9, 1)",
      "bookmark_text": "rgba(141, 124, 195, 1)",
      "toolbar_field": "rgba(14, 9, 27, 1)",
      "toolbar_field_text": "rgba(141, 124, 195, 1)",
      "tab_line": "rgba(10, 7, 19, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{54e62b31-503a-454c-96eb-e0b09e02f06a}"
    }
  }
}