Examine source code of MapleSyrup

{
  "name": "MapleSyrup",
  "manifest_version": 2,
  "version": "5.0",
  "theme": {
    "images": {
      "theme_frame": "MsplrSyrup.png"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(30, 90, 45, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{e4e478e5-4bac-4fae-886a-9f1de4a6a8b6}"
    }
  }
}