Examine source code of Hydrangea_Ajisai

{
  "theme": {
    "images": {
      "theme_frame": "flower_june1.jpg"
    },
    "colors": {
      "frame": "#093454",
      "tab_background_text": "#f7fafc"
    }
  },
  "version": "2.0",
  "name": "Hydrangea_Ajisai",
  "manifest_version": 2,
  "description": "The flower that melted to water was imaged."
}