Examine source code of Blue Velvet

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Blue Velvet",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(0, 14, 28, 0.01)",
      "toolbar_text": "rgb(218, 169, 67)",
      "frame": "rgb(1, 6, 32)",
      "tab_background_text": "rgb(218, 169, 67)",
      "toolbar_field": "rgba(1, 1, 30, 0.96)",
      "toolbar_field_text": "rgba(218, 169, 67, 0.69)",
      "tab_line": "rgb(170, 120, 2)",
      "popup": "rgba(1, 28, 49, 0.49)",
      "popup_text": "rgb(217, 187, 128)",
      "button_background_active": "rgba(96, 4, 174, 0.69)",
      "button_background_hover": "rgba(4, 174, 37, 0.46)",
      "ntp_background": "rgb(1, 1, 36)",
      "sidebar_text": "rgb(202, 167, 18)",
      "sidebar": "rgb(0, 3, 23)",
      "tab_text": "rgb(193, 156, 36)",
      "toolbar_field_border_focus": "rgba(1, 1, 38, 0.94)",
      "toolbar_field_border": "rgba(0, 0, 18, 0.94)",
      "toolbar_field_focus": "rgba(1, 5, 36, 0.29)",
      "toolbar_field_highlight_text": "rgba(221, 174, 4, 0.84)",
      "toolbar_field_text_focus": "rgba(198, 157, 9, 0.84)",
      "tab_loading": "rgb(170, 120, 2)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{9e5717a0-a74b-405d-b639-cf3ae4f81e07}"
    }
  }
}