Examine source code of The Lines

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Gray Lines",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "left center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(51, 64, 82, 0.44)",
      "toolbar_text": "rgb(230, 245, 255)",
      "frame": "rgb(43, 56, 71)",
      "tab_background_text": "rgb(150, 158, 169)",
      "toolbar_field": "rgba(131, 76, 105, 0.69)",
      "toolbar_field_text": "rgb(230, 245, 255)",
      "tab_line": "rgb(131, 76, 105)",
      "popup": "rgb(58, 69, 84)",
      "popup_text": "rgb(174, 185, 191)",
      "tab_loading": "rgb(131, 76, 105)"
    }
  }
}