Examine source code of Rust Orange-elegance

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Rust Orange",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "left bottom"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(225, 126, 25)",
      "toolbar_text": "rgb(0, 0, 0)",
      "frame": "rgb(200, 101, 0)",
      "tab_background_text": "rgb(0, 0, 0)",
      "toolbar_field": "rgb(252, 228, 213)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgb(20, 20, 20)",
      "popup": "rgb(20, 20, 20)",
      "popup_text": "rgb(252, 228, 213)",
      "tab_loading": "rgb(20, 20, 20)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{01f0b55b-286b-49c4-a676-d1bde6445636}"
    }
  }
}