Examine source code of flareon running

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "flareon running",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right bottom"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(73, 163, 184)",
      "toolbar_text": "rgb(0, 0, 0)",
      "frame": "rgb(39, 198, 229)",
      "tab_background_text": "rgb(0, 0, 0)",
      "toolbar_field": "rgba(0, 0, 0, 0.53)",
      "toolbar_field_text": "rgb(148, 116, 237)",
      "tab_line": "rgb(8, 255, 235)",
      "popup": "rgb(12, 146, 170)",
      "popup_text": "rgb(84, 84, 84)",
      "tab_loading": "rgb(8, 255, 235)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{3c300f6c-a7c1-401e-9c97-2a84c1ad9749}"
    }
  }
}