Examine source code of Yellow Insanity

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Yellow Insanity",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-032-c7f80ac9e21af771c8d088973b1309ea.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(78, 84, 7)",
      "toolbar_text": "rgb(214, 218, 67)",
      "frame": "rgb(59, 65, 14)",
      "tab_background_text": "rgb(172, 180, 24)",
      "toolbar_field": "rgb(93, 102, 38)",
      "toolbar_field_text": "rgb(255, 255, 193)",
      "tab_line": "rgb(206, 218, 67)",
      "popup": "rgb(78, 84, 7)",
      "popup_text": "rgb(180, 180, 24)",
      "tab_loading": "rgb(206, 218, 67)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f49ed3bf-3071-4ea6-8fab-2b238b00e595}"
    }
  }
}