Examine source code of Green Venom

{
  "manifest_version": 2,
  "version": "2.0",
  "name": "Venom",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-026-829b05416f823e170310e7c826ad1bec.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(89, 109, 115, 0.73)",
      "toolbar_field": "rgb(64, 69, 69)",
      "toolbar_field_text": "rgb(14, 216, 38)",
      "tab_line": "rgb(67, 38, 28)",
      "popup": "rgb(74, 81, 82)",
      "popup_text": "rgb(14, 229, 40)",
      "tab_loading": "rgb(67, 38, 28)",
      "bookmark_text": "rgb(14, 229, 40)",
      "frame": "rgb(74, 81, 82)",
      "tab_background_text": "rgb(22, 195, 43)"
    }
  }
}