Examine source code of Crimea Summer

{
  "theme": {
    "images": {
      "theme_frame": "Persona_Header_crimea.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#000"
    }
  },
  "version": "2.0",
  "name": "Crimea Summer",
  "manifest_version": 2,
  "description": "Remember the summer, hot, black and white, walks and music of waves.\n\nI used my photos taken by Zenit ET camera, and try Gimp 2.6, finished my work with Photoscape… have fun, folks"
}