Examine source code of Sunflowers

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Sunflowers",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "left center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(243, 234, 163, 0.71)",
      "toolbar_text": "rgb(48, 69, 39)",
      "frame": "rgb(235, 220, 38)",
      "tab_background_text": "rgb(35, 26, 3)",
      "toolbar_field": "rgba(239, 243, 181, 0.72)",
      "toolbar_field_text": "rgb(50, 85, 35)",
      "tab_line": "rgb(50, 85, 35)",
      "popup": "rgba(239, 243, 181, 0.72)",
      "popup_text": "rgb(50, 85, 35)",
      "tab_loading": "rgb(50, 85, 35)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{2f24e878-c675-4e39-8370-b3f6e3c3b3e0}"
    }
  }
}