Examine source code of Landscape clear

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Landscape clear",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(0, 0, 0, 0)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(17, 17, 21)",
      "tab_background_text": "rgb(210, 210, 210)",
      "toolbar_field": "rgba(0, 0, 0, 0.16)",
      "toolbar_field_text": "rgb(248, 249, 255)",
      "tab_line": "rgba(255, 255, 255, 0.87)",
      "popup": "rgb(60, 63, 82)",
      "popup_text": "rgb(232, 232, 232)",
      "button_background_hover": "rgba(255, 255, 255, 0.11)",
      "frame_inactive": "rgba(255, 255, 255, 0)",
      "icons": "rgb(241, 241, 241)",
      "ntp_background": "rgb(13, 13, 15)",
      "ntp_text": "rgb(255, 255, 255)",
      "popup_border": "rgba(85, 93, 115, 0)",
      "sidebar_border": "rgba(255, 255, 255, 0)",
      "tab_selected": "rgba(0, 0, 0, 0)",
      "toolbar_field_border_focus": "rgba(0, 0, 0, 0)",
      "toolbar_field_border": "rgba(252, 252, 252, 0)",
      "toolbar_field_focus": "rgb(68, 60, 70)",
      "toolbar_field_separator": "rgba(255, 255, 255, 0.31)",
      "toolbar_top_separator": "rgba(255, 255, 255, 0)",
      "toolbar_vertical_separator": "rgba(255, 255, 255, 0.29)",
      "tab_loading": "rgba(255, 255, 255, 0.87)"
    }
  }
}