Examine source code of CrossingsCon 2021

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "CrossingsCon 2021",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "left top"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(44, 52, 56, 0.61)",
      "toolbar_text": "rgb(255, 218, 143)",
      "frame": "rgb(59, 97, 73)",
      "tab_background_text": "rgb(255, 254, 242)",
      "toolbar_field": "rgb(255, 254, 242)",
      "toolbar_field_text": "rgb(59, 97, 73)",
      "tab_line": "rgb(187, 126, 0)",
      "popup": "rgb(255, 254, 242)",
      "popup_text": "rgb(51, 51, 51)",
      "icons_attention": "rgb(59, 179, 104)",
      "ntp_background": "rgb(35, 59, 44)",
      "ntp_text": "rgb(255, 255, 255)",
      "popup_border": "rgb(177, 180, 185)",
      "popup_highlight_text": "rgb(35, 59, 44)",
      "popup_highlight": "rgb(255, 218, 143)",
      "sidebar_border": "rgb(177, 180, 185)",
      "sidebar_highlight_text": "rgb(35, 59, 44)",
      "sidebar_highlight": "rgb(255, 218, 143)",
      "sidebar_text": "rgb(51, 51, 51)",
      "sidebar": "rgb(255, 254, 242)",
      "tab_loading": "rgb(255, 218, 143)",
      "toolbar_field_highlight": "rgb(107, 148, 122)",
      "toolbar_field_separator": "rgb(205, 176, 119)"
    }
  }
}