Examine source code of 40k Space Marines

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Warhammer Theme 1",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center top"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(7, 7, 7, 0.75)",
      "toolbar_text": "rgb(245, 249, 34)",
      "frame": "rgb(255, 255, 255)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(255, 255, 255)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgb(255, 60, 0)",
      "popup": "rgb(0, 0, 0)",
      "popup_text": "rgb(255, 185, 0)",
      "button_background_hover": "rgba(255, 234, 3, 0.75)",
      "tab_loading": "rgb(255, 60, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{302a6034-bfd7-455c-8b75-65b03cf8466e}"
    }
  }
}