Examine source code of Amakano 2

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#ff7f7f",
      "tab_background_text": "#7f3f3f"
    }
  },
  "version": "2.0",
  "name": "Amakano 2",
  "manifest_version": 2,
  "description": "Sayuki Takayashiro / Mizuki Kanbayashi / Koharu Hoshikawa\n\nAmakano"
}