Examine source code of Sumikko Gurashi

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Sumikko Gurashi",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "left center"
      ],
      "additional_backgrounds_tiling": [
        "repeat-x"
      ]
    },
    "colors": {
      "toolbar": "rgb(147, 242, 224)",
      "toolbar_text": "rgb(155, 236, 243)",
      "frame": "rgb(192, 231, 226)",
      "tab_background_text": "rgb(100, 234, 209)",
      "toolbar_field": "rgba(149, 219, 158, 0)",
      "toolbar_field_text": "rgb(238, 238, 105)",
      "tab_line": "rgb(109, 215, 215)",
      "popup": "rgb(103, 231, 113)",
      "popup_text": "rgb(159, 65, 190)",
      "ntp_background": "rgb(211, 239, 236)",
      "tab_loading": "rgb(109, 215, 215)"
    }
  }
}