Examine source code of Suspender

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Suspender",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(132, 74, 33)",
      "toolbar_text": "rgb(217, 226, 234)",
      "frame": "rgb(2, 66, 77)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(28, 34, 38)",
      "toolbar_field_text": "rgb(124, 175, 216)",
      "tab_line": "rgba(149, 11, 37, 0.66)",
      "popup": "rgb(23, 42, 51)",
      "popup_text": "rgb(98, 102, 183)",
      "tab_loading": "rgba(149, 11, 37, 0.66)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{e23b21cf-4ab4-4dd6-b273-05db332e3237}"
    }
  }
}