Examine source code of blackgold

{
  "name": "blackgold",
  "manifest_version": 2,
  "version": "4.0",
  "theme": {
    "images": {
      "theme_frame": "BlackGold2b.png"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "rgba(255, 250, 224, 1)",
      "tab_line": "rgba(204, 167, 82, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{48f9b0e9-552d-44ad-a656-d1412c34fcdd}"
    }
  }
}