Examine source code of Dim light.01

{
  "theme": {
    "images": {
      "theme_frame": "a-712--moza-honokanaakari---a-sy.jpg"
    },
    "colors": {
      "frame": "#f3f5e7",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Dim light.01",
  "manifest_version": 2,
  "description": "ほのかな灯り。。。　"
}