Examine source code of Capybara

{
  "theme": {
    "images": {
      "theme_frame": ".jpg"
    },
    "colors": {
      "frame": "#000dff",
      "tab_background_text": "#2197ff"
    }
  },
  "version": "2.0",
  "name": "Capybara",
  "manifest_version": 2,
  "description": "カピバラすごく好きです"
}