Examine source code of cool hacker theme

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "hacker theme",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-005-f5f3cf677b1f132c75ddc7bd319dd1fc.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(29, 86, 26, 0.57)",
      "toolbar_text": "rgb(58, 240, 107)",
      "frame": "rgb(18, 43, 5)",
      "tab_background_text": "rgb(66, 187, 82)",
      "toolbar_field": "rgba(63, 67, 62, 0.87)",
      "toolbar_field_text": "rgb(58, 240, 107)",
      "tab_line": "rgb(49, 96, 24)",
      "popup": "rgba(0, 0, 0, 0.47)",
      "popup_text": "rgb(24, 226, 95)",
      "tab_loading": "rgb(49, 96, 24)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{af3cc6d7-8766-47f7-ba5b-a6d7d3ad3292}"
    }
  }
}