Examine source code of Blueberry Cheesecake

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Blueberry Cheesecake ",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-004-411c27df18d2f86bd8790aa4a1bde85f.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(199, 199, 199)",
      "toolbar_text": "rgb(0, 0, 0)",
      "frame": "rgb(55, 2, 146)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(255, 203, 0)",
      "toolbar_field_text": "rgb(123, 127, 204)",
      "tab_line": "rgb(245, 255, 0)",
      "popup": "rgb(33, 1, 105)",
      "popup_text": "rgb(255, 202, 0)",
      "tab_loading": "rgb(245, 255, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{4407813a-50cd-4762-8777-dd2800471e01}"
    }
  }
}