Examine source code of dark conditions

{
  "name": "dark conditions",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "abstrakt102.png"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(0, 255, 251, 1)",
      "toolbar": "rgba(0, 0, 0, 0)",
      "bookmark_text": "rgba(255, 242, 0, 1)",
      "toolbar_field": "rgba(0, 0, 0, 0.43)",
      "toolbar_field_text": "rgba(0, 255, 9, 1)",
      "tab_line": "rgba(150, 111, 21, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{1c3c556a-11cf-4126-aaf0-70005363781f}"
    }
  }
}