{
  programs.element-desktop = {
    enable = true;
    settings = {
      # https://github.com/element-hq/element-web/blob/develop/docs/config.md
      # https://github.com/catppuccin/element
      "show_labs_settings" = true;
      "setting_defaults" = {
        default_theme = "custom-Catppuccin Latte (Mauve)";
        "custom_themes" = [
          {
            "name" = "Catppuccin Latte (Mauve)";
            "is_dark" = false;
            "colors" = {
              "accent-color" = "#8839ef";
              "primary-color" = "#8839ef";
              "warning-color" = "#d20f39";
              "alert" = "#df8e1d";
              "sidebar-color" = "#dce0e8";
              "roomlist-background-color" = "#e6e9ef";
              "roomlist-text-color" = "#4c4f69";
              "roomlist-text-secondary-color" = "#7c7f93";
              "roomlist-highlights-color" = "#bcc0cc";
              "roomlist-separator-color" = "#8c8fa1";
              "timeline-background-color" = "#eff1f5";
              "timeline-text-color" = "#4c4f69";
              "secondary-content" = "#4c4f69";
              "tertiary-content" = "#4c4f69";
              "timeline-text-secondary-color" = "#6c6f85";
              "timeline-highlights-color" = "#e6e9ef";
              "reaction-row-button-selected-bg-color" = "#bcc0cc";
              "menu-selected-color" = "#bcc0cc";
              "focus-bg-color" = "#acb0be";
              "room-highlight-color" = "#04a5e5";
              "togglesw-off-color" = "#7c7f93";
              "other-user-pill-bg-color" = "#04a5e5";
              "username-colors" = [
                "#8839ef"
                "#e64553"
                "#fe640b"
                "#40a02b"
                "#179299"
                "#04a5e5"
                "#209fb5"
                "#7287fd"
              ];
              "avatar-background-colors" = [
                "#1e66f5"
                "#8839ef"
                "#40a02b"
              ];
            };
          }
          {
            "name" = "Catppuccin Frappé (Mauve)";
            "is_dark" = true;
            "colors" = {
              "accent-color" = "#ca9ee6";
              "primary-color" = "#ca9ee6";
              "warning-color" = "#e78284";
              "alert" = "#e5c890";
              "sidebar-color" = "#232634";
              "roomlist-background-color" = "#292c3c";
              "roomlist-text-color" = "#c6d0f5";
              "roomlist-text-secondary-color" = "#949cbb";
              "roomlist-highlights-color" = "#51576d";
              "roomlist-separator-color" = "#838ba7";
              "timeline-background-color" = "#303446";
              "timeline-text-color" = "#c6d0f5";
              "secondary-content" = "#c6d0f5";
              "tertiary-content" = "#c6d0f5";
              "timeline-text-secondary-color" = "#a5adce";
              "timeline-highlights-color" = "#292c3c";
              "reaction-row-button-selected-bg-color" = "#51576d";
              "menu-selected-color" = "#51576d";
              "focus-bg-color" = "#626880";
              "room-highlight-color" = "#99d1db";
              "togglesw-off-color" = "#949cbb";
              "other-user-pill-bg-color" = "#99d1db";
              "username-colors" = [
                "#ca9ee6"
                "#ea999c"
                "#ef9f76"
                "#a6d189"
                "#81c8be"
                "#99d1db"
                "#85c1dc"
                "#babbf1"
              ];
              "avatar-background-colors" = [
                "#8caaee"
                "#ca9ee6"
                "#a6d189"
              ];
            };
          }
          {
            "name" = "Catppuccin Macchiato (Mauve)";
            "is_dark" = true;
            "colors" = {
              "accent-color" = "#c6a0f6";
              "primary-color" = "#c6a0f6";
              "warning-color" = "#ed8796";
              "alert" = "#eed49f";
              "sidebar-color" = "#181926";
              "roomlist-background-color" = "#1e2030";
              "roomlist-text-color" = "#cad3f5";
              "roomlist-text-secondary-color" = "#939ab7";
              "roomlist-highlights-color" = "#494d64";
              "roomlist-separator-color" = "#8087a2";
              "timeline-background-color" = "#24273a";
              "timeline-text-color" = "#cad3f5";
              "secondary-content" = "#cad3f5";
              "tertiary-content" = "#cad3f5";
              "timeline-text-secondary-color" = "#a5adcb";
              "timeline-highlights-color" = "#1e2030";
              "reaction-row-button-selected-bg-color" = "#494d64";
              "menu-selected-color" = "#494d64";
              "focus-bg-color" = "#5b6078";
              "room-highlight-color" = "#91d7e3";
              "togglesw-off-color" = "#939ab7";
              "other-user-pill-bg-color" = "#91d7e3";
              "username-colors" = [
                "#c6a0f6"
                "#ee99a0"
                "#f5a97f"
                "#a6da95"
                "#8bd5ca"
                "#91d7e3"
                "#7dc4e4"
                "#b7bdf8"
              ];
              "avatar-background-colors" = [
                "#8aadf4"
                "#c6a0f6"
                "#a6da95"
              ];
            };
          }
          {
            "name" = "Catppuccin Mocha (Mauve)";
            "is_dark" = true;
            "colors" = {
              "accent-color" = "#cba6f7";
              "primary-color" = "#cba6f7";
              "warning-color" = "#f38ba8";
              "alert" = "#f9e2af";
              "sidebar-color" = "#11111b";
              "roomlist-background-color" = "#181825";
              "roomlist-text-color" = "#cdd6f4";
              "roomlist-text-secondary-color" = "#9399b2";
              "roomlist-highlights-color" = "#45475a";
              "roomlist-separator-color" = "#7f849c";
              "timeline-background-color" = "#1e1e2e";
              "timeline-text-color" = "#cdd6f4";
              "secondary-content" = "#cdd6f4";
              "tertiary-content" = "#cdd6f4";
              "timeline-text-secondary-color" = "#a6adc8";
              "timeline-highlights-color" = "#181825";
              "reaction-row-button-selected-bg-color" = "#45475a";
              "menu-selected-color" = "#45475a";
              "focus-bg-color" = "#585b70";
              "room-highlight-color" = "#89dceb";
              "togglesw-off-color" = "#9399b2";
              "other-user-pill-bg-color" = "#89dceb";
              "username-colors" = [
                "#cba6f7"
                "#eba0ac"
                "#fab387"
                "#a6e3a1"
                "#94e2d5"
                "#89dceb"
                "#74c7ec"
                "#b4befe"
              ];
              "avatar-background-colors" = [
                "#89b4fa"
                "#cba6f7"
                "#a6e3a1"
              ];
            };
          }
        ];
      };
    };
  };
}