Examine source code of Cloudy Morning

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Cloudy Morning",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center top"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(220, 228, 255)",
      "toolbar_text": "rgb(255, 48, 0)",
      "frame": "rgb(0, 140, 71)",
      "tab_background_text": "rgb(202, 230, 241)",
      "toolbar_field": "rgb(240, 253, 255)",
      "toolbar_field_text": "rgb(255, 82, 0)",
      "tab_line": "rgb(255, 131, 0)",
      "popup": "rgb(255, 223, 223)",
      "popup_text": "rgb(50, 23, 225)",
      "ntp_background": "rgb(171, 185, 229)",
      "ntp_text": "rgb(85, 0, 255)",
      "tab_loading": "rgb(255, 131, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{09858c48-d34a-4577-bf2c-e3c396eb8ed1}"
    }
  }
}