Examine source code of MidnightPurple

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "MidnightPurple",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(23, 0, 37)",
      "toolbar_text": "rgb(0, 255, 16)",
      "frame": "rgb(39, 0, 75)",
      "tab_background_text": "rgb(69, 255, 0)",
      "toolbar_field": "rgba(62, 0, 0, 0.9)",
      "toolbar_field_text": "rgb(0, 255, 16)",
      "tab_line": "rgb(69, 255, 0)",
      "popup": "rgba(96, 0, 255, 0.69)",
      "popup_text": "rgb(234, 255, 0)",
      "tab_loading": "rgb(69, 255, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{1daa5455-c2aa-46ee-b3fc-a2539a7742e1}"
    }
  }
}