Examine source code of GOT7 UNDERCONSTRUCTION

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "GOT7 HOMECOMING",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center center"
      ],
      "additional_backgrounds_tiling": [
        "repeat-x"
      ]
    },
    "colors": {
      "toolbar": "rgba(64, 70, 65, 0.63)",
      "toolbar_text": "rgba(123, 217, 104, 0.7)",
      "frame": "rgb(117, 170, 117)",
      "tab_background_text": "rgb(198, 233, 198)",
      "toolbar_field": "rgba(152, 173, 152, 0.7)",
      "toolbar_field_text": "rgba(123, 217, 104, 0.7)",
      "tab_line": "rgb(42, 112, 65)",
      "popup": "rgba(64, 70, 65, 0.63)",
      "popup_text": "rgb(98, 183, 128)",
      "tab_loading": "rgb(42, 112, 65)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{9065148d-aeae-4c2f-b7e3-2570374bd7c8}"
    }
  }
}