Examine source code of Hello T.Bear

{
  "theme": {
    "images": {
      "theme_frame": "hello-bear_03-01.jpg"
    },
    "colors": {
      "frame": "#8999c4",
      "tab_background_text": "#303030"
    }
  },
  "version": "2.0",
  "name": "Hello T.Bear",
  "manifest_version": 2,
  "description": "いつも、どこにいても、この想い・・・\n君の側に・・・クマさん、ありがとう！"
}