Examine source code of Purple Grid Pastel

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Purple Grid Pastel",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-005-f5f3cf677b1f132c75ddc7bd319dd1fc.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(225, 235, 249)",
      "toolbar_text": "rgb(150, 113, 186)",
      "frame": "rgb(159, 139, 205)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(255, 255, 255)",
      "toolbar_field_text": "rgb(177, 143, 200)",
      "tab_line": "rgb(166, 1, 255)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(144, 93, 175)",
      "tab_loading": "rgb(166, 1, 255)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{96eb0f4c-e6e4-4430-a535-51ae689251bf}"
    }
  }
}