Examine source code of Happy Glass

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Happy Glass",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "left top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(47, 165, 210)",
      "toolbar_text": "rgb(248, 112, 140)",
      "frame": "rgb(175, 209, 212)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgba(250, 250, 250, 0.97)",
      "toolbar_field_text": "rgb(255, 0, 172)",
      "tab_line": "rgb(255, 198, 0)",
      "popup": "rgb(122, 162, 255)",
      "popup_text": "rgb(255, 255, 255)",
      "tab_loading": "rgb(255, 198, 0)"
    }
  }
}