Examine source code of Fatestaynightcutheme

{
  "name": "Fate",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "ezgif.com-gif-maker.gif"
    },
    "colors": {
      "frame": "rgba(15, 75, 214, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{48dbb03c-cdd7-4836-9e34-85bc7252f71c}"
    }
  }
}