Examine source code of macaron theme

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "macaron theme",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right bottom"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(248, 237, 236)",
      "toolbar_text": "rgb(107, 88, 70)",
      "frame": "rgb(255, 215, 215)",
      "tab_background_text": "rgb(107, 88, 70)",
      "toolbar_field": "rgb(255, 255, 255)",
      "toolbar_field_text": "rgb(140, 89, 87)",
      "tab_line": "rgb(107, 88, 70)",
      "popup": "rgb(151, 128, 104)",
      "popup_text": "rgb(255, 215, 215)",
      "tab_loading": "rgb(107, 88, 70)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{012bdd09-9119-4c82-b091-58aa01875e85}"
    }
  }
}