Examine source code of Gray Arrows Minimalism

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Gray Arrows Minimalism",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(68, 81, 187)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(49, 66, 87)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(25, 9, 96)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(183, 19, 81)",
      "popup": "rgb(67, 159, 189)",
      "popup_text": "rgb(255, 255, 255)",
      "tab_loading": "rgb(183, 19, 81)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{6529e585-624b-4fe6-8b5d-9b474da347e8}"
    }
  }
}