Examine source code of AuroraBlur

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "NewEarthtones",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-026-829b05416f823e170310e7c826ad1bec.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(54, 37, 70, 0.61)",
      "toolbar_text": "rgba(39, 174, 96, 0.81)",
      "frame": "rgb(30, 28, 37)",
      "tab_background_text": "rgb(202, 191, 198)",
      "toolbar_field": "rgba(43, 39, 54, 0.75)",
      "toolbar_field_text": "rgb(202, 191, 198)",
      "tab_line": "rgb(154, 205, 50)",
      "popup": "rgba(43, 39, 54, 0.75)",
      "popup_text": "rgb(123, 104, 238)",
      "icons_attention": "rgb(154, 205, 50)",
      "popup_highlight": "rgb(54, 37, 70)",
      "toolbar_field_border_focus": "rgb(216, 0, 112)",
      "toolbar_field_border": "rgb(43, 39, 54)",
      "toolbar_field_highlight": "rgb(123, 104, 238)",
      "tab_loading": "rgb(154, 205, 50)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c5c307da-cfe2-49e4-96d3-e987ed4699dd}"
    }
  }
}