Examine source code of Sweet Heart-01

{
  "theme": {
    "images": {
      "theme_frame": "sweet-heart-01.jpg"
    },
    "colors": {
      "frame": "#edbd74",
      "tab_background_text": "#ab3a02"
    }
  },
  "version": "2.0",
  "name": "Sweet Heart-01",
  "manifest_version": 2,
  "description": "私の宝物・・・それはあなたの大切な想い。"
}