Examine source code of School rumble yakumo

{
  "theme": {
    "images": {
      "theme_frame": "Schoolrumble_Header.jpg"
    },
    "colors": {
      "frame": "#fc24ee",
      "tab_background_text": "#f725e9"
    }
  },
  "version": "2.0",
  "name": "School rumble yakumo",
  "manifest_version": 2,
  "description": "School rumble yakumo"
}