Examine source code of gulusgammamon theme

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "gulusgammamon theme",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(0, 0, 0, 0.57)",
      "toolbar_text": "rgb(255, 227, 0)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(255, 241, 0)",
      "toolbar_field": "rgb(0, 0, 0)",
      "toolbar_field_text": "rgb(234, 0, 255)",
      "tab_line": "rgb(255, 0, 246)",
      "popup": "rgb(235, 0, 255)",
      "popup_text": "rgb(0, 0, 0)",
      "button_background_active": "rgb(35, 16, 128)",
      "icons_attention": "rgb(255, 0, 4)",
      "icons": "rgba(255, 0, 255, 0.96)",
      "tab_loading": "rgba(69, 0, 86, 0.48)",
      "tab_selected": "rgba(124, 0, 139, 0.53)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{85f7141c-9c6b-431a-bc5c-90aec57d4aa6}"
    }
  }
}