Examine source code of Ritsurin Sakura

{
  "theme": {
    "images": {
      "theme_frame": "fpritsusakurah.jpg"
    },
    "colors": {
      "frame": "#ffccff",
      "tab_background_text": "#000099"
    }
  },
  "version": "2.0",
  "name": "Ritsurin Sakura",
  "manifest_version": 2,
  "description": "Nice cherry blossoms from Ritsurin Park, Takamatsu, Japan."
}