Examine source code of Greenish flow

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Greenish flow",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(65, 129, 94, 0.5)",
      "toolbar_text": "rgb(208, 231, 226)",
      "frame": "rgb(38, 133, 95)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgba(250, 255, 241, 0.5)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgb(33, 210, 131)",
      "popup": "rgb(17, 53, 54)",
      "popup_text": "rgb(194, 255, 246)",
      "tab_loading": "rgb(33, 210, 131)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{9e9d7421-e98d-4383-9479-456707e0738d}"
    }
  }
}