Examine source code of Karasuno anime

{
  "name": "Karasuno anime  ",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "giphy.gif"
    },
    "colors": {
      "frame": "rgba(255, 255, 255, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(240, 81, 45, 0)",
      "bookmark_text": "rgba(219, 68, 21, 1)",
      "toolbar_field": "rgba(214, 169, 159, 0.35)",
      "toolbar_field_text": "rgba(10, 10, 10, 1)",
      "tab_line": "rgba(224, 63, 4, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{cf33d488-3de9-4075-b0e5-263eb98e300e}"
    }
  }
}