Examine source code of Material Esque

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Material Esque",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-017-7074520d97b5c592d413aed5f115f093.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(45, 45, 52)",
      "toolbar_text": "rgb(226, 225, 244)",
      "frame": "rgb(58, 58, 66)",
      "tab_background_text": "rgb(150, 149, 167)",
      "toolbar_field": "rgb(58, 58, 66)",
      "toolbar_field_text": "rgb(226, 225, 244)",
      "tab_line": "rgb(172, 191, 175)",
      "popup": "rgb(58, 58, 66)",
      "popup_text": "rgb(226, 225, 244)",
      "tab_loading": "rgb(172, 191, 175)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{dcd0a334-e3ed-4516-a3a1-1971751bbc10}"
    }
  }
}