Examine source code of Tropical colors theme

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Tropicalcolors",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-001-9c6d74e14860e77ee6f8f43e824bff25.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(49, 246, 49)",
      "toolbar_text": "rgb(32, 72, 80)",
      "frame": "rgb(238, 238, 39)",
      "tab_background_text": "rgb(13, 19, 20)",
      "toolbar_field": "rgb(38, 72, 102)",
      "toolbar_field_text": "rgb(67, 194, 218)",
      "tab_line": "rgb(67, 194, 218)",
      "popup": "rgb(7, 50, 84)",
      "popup_text": "rgb(24, 156, 180)",
      "tab_loading": "rgb(67, 194, 218)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{81544c5d-58b2-42a0-b588-3c7d6915d575}"
    }
  }
}