Examine source code of Gum: Green Pink

{
  "manifest_version": 2,
  "version": "4.1",
  "name": "Gum: Green Pink",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "left top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(75, 24, 75, 0.6)",
      "toolbar_text": "rgb(235, 192, 227)",
      "frame": "rgb(131, 169, 147)",
      "tab_background_text": "rgb(247, 247, 254)",
      "toolbar_field": "rgba(59, 47, 55, 0.54)",
      "toolbar_field_text": "rgb(235, 204, 229)",
      "tab_line": "rgb(220, 29, 212)",
      "popup": "rgb(152, 213, 208)",
      "popup_text": "rgb(108, 56, 108)",
      "tab_loading": "rgb(220, 29, 212)"
    }
  }
}