Examine source code of Color Picker Popup

{
  "manifest_version": 2,
  "name": "Color Picker Popup",
  "version": "1.0",
  "description": "Pick a color and copy its hex code instantly.",
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icon.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{fc5e4be1-eb77-4ab0-a8b4-9841f64ce6c6}"
    }
  }
}