Examine source code of minecraft gamax

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "minecraft gamax",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png",
        "images/1.jpg",
        "images/2.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center top",
        "center top",
        "right center"
      ],
      "additional_backgrounds_tiling": [
        "repeat-y",
        "repeat-x",
        "repeat-y"
      ]
    },
    "colors": {
      "toolbar": "rgba(237, 254, 5, 0.16)",
      "toolbar_text": "rgba(0, 0, 0, 0.97)",
      "frame": "rgb(53, 253, 10)",
      "tab_background_text": "rgb(20, 3, 251)",
      "toolbar_field": "rgba(0, 0, 0, 0.51)",
      "toolbar_field_text": "rgba(252, 253, 248, 0.89)",
      "tab_line": "rgb(3, 251, 187)",
      "popup": "rgb(0, 0, 0)",
      "popup_text": "rgb(0, 255, 3)",
      "ntp_background": "rgb(29, 219, 155)",
      "tab_loading": "rgb(3, 251, 187)"
    }
  }
}