Examine source code of spring bluebells

{
  "theme": {
    "images": {
      "theme_frame": "springbluebellsalto.jpg"
    },
    "colors": {
      "frame": "#c9c9c9",
      "tab_background_text": "#ffff33"
    }
  },
  "version": "2.0",
  "name": "spring bluebells",
  "manifest_version": 2,
  "description": "flowers,bloom,leaves,pastel,green,blue,pink,purple,violet,burgundy,colorful,\nlight,fog,summer,fantasy,candelora,magical,vector,abstract"
}