Examine source code of Neon Mix

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Neon Mix",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(5, 5, 10)",
      "toolbar_text": "rgb(0, 225, 255)",
      "frame": "rgb(5, 5, 10)",
      "tab_background_text": "rgb(0, 225, 255)",
      "toolbar_field": "rgb(5, 5, 10)",
      "toolbar_field_text": "rgb(0, 225, 255)",
      "tab_line": "rgb(0, 225, 255)",
      "popup": "rgb(7, 50, 84)",
      "popup_text": "rgb(0, 225, 255)",
      "tab_loading": "rgb(255, 0, 4)",
      "tab_selected": "rgb(21, 21, 41)",
      "tab_text": "rgb(255, 41, 255)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{1d4eb18f-7055-4894-b0a8-1787bb609501}"
    }
  }
}