Examine source code of Camo - Dark Transparent

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Camo - Dark Transparent",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(0, 0, 0, 0.5)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgba(26, 26, 26, 0.5)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(140, 0, 255)",
      "popup": "rgb(162, 162, 162)",
      "popup_text": "rgb(0, 0, 0)",
      "popup_border": "rgb(0, 0, 0)",
      "popup_highlight_text": "rgb(227, 0, 255)",
      "popup_highlight": "rgb(0, 255, 159)",
      "tab_loading": "rgb(140, 0, 255)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{5c81c9da-3ab2-4533-b6aa-438f37001f1c}"
    }
  }
}