Examine source code of Forest Plaid

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Forest Plaid",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png",
        "images/1.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top",
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat",
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(74, 126, 99)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(39, 39, 39)",
      "tab_background_text": "rgb(202, 202, 202)",
      "toolbar_field": "rgb(55, 81, 68)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(118, 171, 141)",
      "popup": "rgb(55, 81, 68)",
      "popup_text": "rgb(255, 255, 255)",
      "tab_loading": "rgb(118, 171, 141)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{4aa2edd7-2b30-450c-a174-3836ddeb278a}"
    }
  }
}