Examine source code of May First

{
  "theme": {
    "images": {
      "theme_frame": "May1H.jpg"
    },
    "colors": {
      "frame": "#6c7a85",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "May First",
  "manifest_version": 2,
  "description": "farm, fields, tilled, ground, plant, country, sky, clouds, \n\nDesigned by MaDonna"
}