Examine source code of OpenSUSeD

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "OpenSUSeD",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(49, 54, 59)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(49, 54, 59)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(61, 66, 71)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(182, 219, 137)",
      "popup": "rgb(49, 54, 59)",
      "popup_text": "rgb(255, 255, 255)",
      "button_background_hover": "rgb(182, 219, 137)",
      "frame_inactive": "rgba(182, 219, 137, 0)",
      "popup_highlight": "rgb(182, 219, 137)",
      "sidebar_highlight": "rgb(182, 219, 137)",
      "tab_loading": "rgb(182, 219, 137)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{d33dbd2e-54b5-4567-b14d-91abb18fe6b2}"
    }
  }
}