Examine source code of Primrose

{
  "theme": {
    "images": {
      "theme_frame": "sakurasou-01.jpg"
    },
    "colors": {
      "frame": "#ff708d",
      "tab_background_text": "#fccdcd"
    }
  },
  "version": "2.0",
  "name": "Primrose",
  "manifest_version": 2,
  "description": "桜草：初恋にも似た優しい甘〜い香りに包まれて・・・まるで春の訪れを待ちこがれる少女のよう。"
}