Examine source code of Leben!

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Leben!",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right center"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(38, 39, 39)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(28, 6, 4)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(85, 7, 21)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(255, 8, 51)",
      "popup": "rgb(23, 22, 22)",
      "popup_text": "rgb(255, 255, 255)",
      "sidebar_text": "rgb(255, 255, 255)",
      "sidebar": "rgb(112, 32, 32)",
      "tab_background_separator": "rgb(25, 5, 5)",
      "tab_loading": "rgb(255, 8, 51)"
    }
  }
}