Examine source code of Minimalistic Rin Tohsaka

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "A Minimalistic Rin Tohsaka Theme",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(25, 11, 6)",
      "toolbar_text": "rgb(235, 191, 160)",
      "frame": "rgb(145, 13, 28)",
      "tab_background_text": "rgb(235, 191, 160)",
      "toolbar_field": "rgb(90, 49, 16)",
      "toolbar_field_text": "rgb(235, 191, 160)",
      "tab_line": "rgba(145, 13, 28, 0)",
      "popup": "rgb(25, 11, 6)",
      "popup_text": "rgb(235, 191, 160)",
      "ntp_background": "rgb(25, 11, 6)",
      "toolbar_bottom_separator": "rgb(25, 11, 6)",
      "toolbar_vertical_separator": "rgb(25, 11, 6)",
      "tab_loading": "rgba(145, 13, 28, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{e0304f5b-dfab-49dd-a749-2277c8a895da}"
    }
  }
}