Examine source code of Dark Theme Translucent

{
  "manifest_version": 2,
  "version": "1.1",
  "name": "Translucent Fox",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right center"
      ],
      "additional_backgrounds_tiling": [
        "repeat-x"
      ]
    },
    "colors": {
      "toolbar": "rgba(28, 28, 28, 0.26)",
      "toolbar_text": "rgb(239, 239, 239)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(225, 225, 225)",
      "toolbar_field": "rgba(62, 53, 74, 0.38)",
      "toolbar_field_text": "rgb(239, 239, 239)",
      "tab_line": "rgb(245, 183, 23)",
      "popup": "rgb(68, 61, 68)",
      "popup_text": "rgb(255, 255, 255)",
      "icons": "rgb(239, 239, 239)",
      "ntp_background": "rgb(68, 61, 68)",
      "ntp_text": "rgb(239, 239, 239)",
      "popup_border": "rgb(245, 183, 23)",
      "toolbar_top_separator": "rgba(81, 81, 81, 0)",
      "tab_loading": "rgb(245, 183, 23)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{e3e97940-d781-43bd-b700-2558c26953fa}"
    }
  }
}