Examine source code of Kitchen Beat

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Kitchen Beat",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-038-6c77b9d7dc86f50c6cd82f9c9b1f36f0.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(255, 110, 175)",
      "toolbar_text": "rgb(253, 242, 240)",
      "frame": "rgb(220, 13, 58)",
      "tab_background_text": "rgb(63, 255, 42)",
      "toolbar_field": "rgb(220, 13, 58)",
      "toolbar_field_text": "rgb(253, 242, 240)",
      "tab_line": "rgb(63, 255, 42)",
      "popup": "rgb(255, 110, 175)",
      "popup_text": "rgb(253, 242, 240)",
      "tab_loading": "rgb(63, 255, 42)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{2cb7b139-6f00-488f-9b6e-1269fc7cbb65}"
    }
  }
}