Examine source code of Blueprint

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "blueprint",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-005-f5f3cf677b1f132c75ddc7bd319dd1fc.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(31, 34, 61)",
      "toolbar_text": "rgb(204, 204, 255)",
      "frame": "rgb(8, 11, 33)",
      "tab_background_text": "rgb(204, 204, 255)",
      "toolbar_field": "rgb(54, 58, 89)",
      "toolbar_field_text": "rgb(204, 204, 255)",
      "tab_line": "rgb(255, 255, 0)",
      "popup": "rgb(31, 34, 61)",
      "popup_text": "rgb(215, 226, 239)",
      "frame_inactive": "rgb(34, 34, 34)",
      "icons": "rgb(204, 204, 255)",
      "ntp_background": "rgb(8, 11, 33)",
      "tab_loading": "rgb(255, 255, 0)",
      "toolbar_field_border_focus": "rgb(255, 255, 0)",
      "toolbar_field_highlight_text": "rgb(31, 34, 61)",
      "toolbar_field_highlight": "rgb(218, 218, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{ff08f60d-a924-444a-8363-aafe5ccf9a2b}"
    }
  }
}