Examine source code of Yellow Bolt

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Yellow Bolt",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-044-2454b1459f8c4ee2e38d41030bf1580e.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(0, 255, 0, 0.5)",
      "toolbar_text": "rgb(30, 34, 145)",
      "frame": "rgb(244, 219, 14)",
      "tab_background_text": "rgb(45, 51, 188)",
      "toolbar_field": "rgba(28, 30, 27, 0)",
      "toolbar_field_text": "rgb(123, 127, 204)",
      "tab_line": "rgb(248, 112, 140)",
      "popup": "rgb(244, 219, 14)",
      "popup_text": "rgb(98, 102, 183)",
      "tab_loading": "rgb(248, 112, 140)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{6aefa92d-a044-42fd-b3e9-3b15b4648e36}"
    }
  }
}