Examine source code of Colorful Abstract 2

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "ca",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(96, 68, 37, 0.24)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(8, 33, 13)",
      "tab_background_text": "rgb(202, 199, 195)",
      "toolbar_field": "rgba(0, 0, 0, 0.25)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(52, 162, 51)",
      "popup": "rgb(9, 18, 12)",
      "popup_text": "rgb(220, 239, 215)",
      "button_background_hover": "rgba(68, 78, 64, 0.5)",
      "ntp_background": "rgb(3, 14, 6)",
      "popup_border": "rgb(91, 173, 90)",
      "popup_highlight": "rgb(69, 90, 69)",
      "tab_loading": "rgb(91, 173, 90)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b377d737-e8de-4fb3-82cd-1a6cf4c9161f}"
    }
  }
}