Examine source code of Clover by clamp

{
  "theme": {
    "images": {
      "theme_frame": "Clover6.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#016929"
    }
  },
  "version": "2.0",
  "name": "Clover by clamp",
  "manifest_version": 2,
  "description": "This is from a manga that I read a while ago during the summer...."
}