Examine source code of Classic Light

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Classic Light",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-011-d53e0d0d1538ed554a90e056a2f04eca.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(239, 239, 239)",
      "toolbar_text": "rgb(0, 0, 0)",
      "frame": "rgb(223, 223, 223)",
      "tab_background_text": "rgb(0, 0, 0)",
      "toolbar_field": "rgb(255, 255, 255)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgba(0, 0, 0, 0)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(0, 0, 0)",
      "button_background_active": "rgba(0, 0, 0, 0.25)",
      "button_background_hover": "rgba(0, 0, 0, 0.12)",
      "icons_attention": "rgb(10, 132, 255)",
      "icons": "rgb(68, 68, 68)",
      "ntp_background": "rgb(253, 253, 253)",
      "sidebar_border": "rgb(221, 221, 221)",
      "toolbar_bottom_separator": "rgb(221, 221, 221)",
      "toolbar_field_border_focus": "rgb(127, 176, 239)",
      "toolbar_field_border": "rgb(221, 221, 221)",
      "toolbar_field_focus": "rgb(254, 254, 254)",
      "toolbar_top_separator": "rgb(239, 239, 239)",
      "tab_loading": "rgba(0, 0, 0, 0)"
    }
  }
}