Examine source code of yamiyugi-purple

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "yamiyugi-purple",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right center"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(25, 25, 25)",
      "toolbar_text": "rgb(242, 242, 242)",
      "frame": "rgb(142, 179, 201)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(48, 48, 48)",
      "toolbar_field_text": "rgb(247, 247, 247)",
      "tab_line": "rgb(177, 56, 81)",
      "popup": "rgb(48, 48, 48)",
      "popup_text": "rgb(253, 253, 253)",
      "tab_loading": "rgb(177, 56, 81)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{1f5a3ead-0c11-4c22-9e9d-a23c61a3c534}"
    }
  }
}