Examine source code of Misty Dark

{
  "name": "Misty Dark",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "blackdot.png"
    },
    "colors": {
      "frame": "rgba(28, 28, 28, 1)",
      "tab_background_text": "rgba(171, 171, 171, 1)",
      "toolbar": "rgba(28, 28, 28, 1)",
      "bookmark_text": "rgba(58, 207, 202, 1)",
      "toolbar_field": "rgba(28, 28, 28, 1)",
      "toolbar_field_text": "rgba(72, 199, 191, 1)",
      "tab_line": "rgba(255, 255, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{d1fdd920-1d31-4d1b-ac34-1733fe04e709}"
    }
  }
}