Examine source code of Grape Vapor

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Grape Vapor",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(52, 13, 76)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(39, 10, 56)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(39, 10, 56)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(153, 153, 153)",
      "popup": "rgb(39, 10, 56)",
      "popup_text": "rgb(255, 255, 255)",
      "button_background_active": "rgb(52, 13, 76)",
      "button_background_hover": "rgb(52, 13, 76)",
      "icons_attention": "rgb(255, 255, 255)",
      "ntp_background": "rgb(39, 10, 56)",
      "ntp_text": "rgb(255, 255, 255)",
      "popup_border": "rgb(153, 153, 153)",
      "sidebar_border": "rgb(52, 13, 76)",
      "sidebar_text": "rgb(255, 255, 255)",
      "tab_loading": "rgb(153, 153, 153)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{389ba285-7859-401a-8a4c-cfe54022aa01}"
    }
  }
}