Examine source code of Gaming Theme

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Gaming Theme",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center top"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(150, 18, 39)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(19, 23, 31)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(255, 255, 255)",
      "toolbar_field_text": "rgb(100, 21, 34)",
      "tab_line": "rgb(150, 18, 39)",
      "popup": "rgb(225, 234, 239)",
      "popup_text": "rgb(255, 255, 255)",
      "tab_loading": "rgb(150, 18, 39)"
    }
  }
}