Examine source code of cats 10

{
  "manifest_version": 2,
  "version": "4.0",
  "name": "cats 10",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(11, 28, 11, 0.26)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(1, 18, 1)",
      "tab_background_text": "rgb(35, 205, 35)",
      "toolbar_field": "rgba(1, 12, 0, 0.26)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(12, 149, 3)",
      "popup": "rgb(1, 18, 1)",
      "popup_text": "rgb(228, 221, 222)",
      "tab_loading": "rgb(12, 149, 3)"
    }
  }
}