Examine source code of Full Dark Theme

{
  "manifest_version": 2,
  "version": "1.2",
  "name": "Full Dark Theme",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(23, 23, 23)",
      "toolbar_text": "rgb(223, 223, 223)",
      "frame": "rgb(14, 14, 14)",
      "tab_background_text": "rgb(140, 140, 140)",
      "toolbar_field": "rgb(18, 18, 18)",
      "toolbar_field_text": "rgb(206, 206, 206)",
      "tab_line": "rgba(0, 0, 0, 0.25)",
      "popup": "rgba(32, 32, 32, 0.88)",
      "popup_text": "rgb(203, 203, 203)",
      "icons_attention": "rgb(35, 154, 240)",
      "ntp_background": "rgb(25, 25, 25)",
      "tab_selected": "rgb(30, 30, 30)",
      "toolbar_bottom_separator": "rgb(23, 23, 23)",
      "toolbar_field_border_focus": "rgb(86, 86, 86)",
      "toolbar_field_border": "rgba(64, 64, 64, 0.23)",
      "toolbar_top_separator": "rgb(14, 14, 14)",
      "tab_loading": "rgba(0, 0, 0, 0.25)"
    }
  }
}