Examine source code of Another Red Theme

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Another Red Theme",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(112, 0, 0)",
      "toolbar_text": "rgb(203, 0, 0)",
      "frame": "rgb(139, 0, 0)",
      "tab_background_text": "rgb(149, 149, 149)",
      "toolbar_field": "rgb(85, 85, 85)",
      "toolbar_field_text": "rgb(215, 0, 0)",
      "tab_line": "rgb(207, 0, 0)",
      "popup": "rgb(49, 49, 49)",
      "popup_text": "rgb(193, 0, 0)",
      "button_background_active": "rgb(162, 0, 0)",
      "button_background_hover": "rgb(18, 18, 18)",
      "frame_inactive": "rgb(82, 82, 82)",
      "icons_attention": "rgb(136, 0, 0)",
      "ntp_background": "rgb(57, 57, 57)",
      "popup_border": "rgb(87, 0, 0)",
      "popup_highlight": "rgb(153, 0, 0)",
      "sidebar_border": "rgb(102, 0, 0)",
      "sidebar_highlight_text": "rgb(230, 0, 0)",
      "sidebar_text": "rgb(210, 0, 0)",
      "tab_loading": "rgb(207, 0, 0)"
    }
  }
}