Examine source code of thunderbolts* logo

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "thunderbolts (assemble edition)",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center top"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(244, 185, 3)",
      "toolbar_text": "rgb(54, 54, 54)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(255, 138, 0)",
      "toolbar_field": "rgb(54, 54, 54)",
      "toolbar_field_text": "rgb(244, 185, 3)",
      "tab_line": "rgb(54, 54, 54)",
      "popup": "rgb(244, 185, 3)",
      "popup_text": "rgb(54, 54, 54)",
      "tab_loading": "rgb(54, 54, 54)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{9334d64a-bcfe-4d8f-94b1-a48043198653}"
    }
  }
}