nixos-config/config/programs/theming.nix

{ pkgs, ... }: {
  gtk.enable = true;
  gtk.iconTheme.package = pkgs.numix-icon-theme;
  gtk.iconTheme.name = "Numix Dark";
  gtk.theme.package = pkgs.libsForQt5.breeze-gtk;
  gtk.theme.name = "Breeze Dark";

  # Paraiso (dark) by Chris Kempson
  # Alacritty colors
  programs.alacritty = {
    enable = true;
    settings = {
      colors = {
        # Default Colors
        primary = {
          background = "0x2f1e2e";
          foreground = "0xa39e9b";
        };

        # Normal Colors
        normal = {
          black = "0x2f1e2e";
          red = "0xef6155";
          green = "0x48b685";
          yellow = "0xfec418";
          blue = "0x06b6ef";
          magenta = "0x815ba4";
          cyan = "0x5bc4bf";
          white = "0xa39e9b";
        };

        # Bright Colors
        bright = {
          black = "0x776e71";
          red = "0xef6155";
          green = "0x48b685";
          yellow = "0xfec418";
          blue = "0x06b6ef";
          magenta = "0x815ba4";
          cyan = "0x5bc4bf";
          white = "0xe7e9db";
        };
      };
    };
  };

  programs.waybar.style = ''
    * {
      border: none;
      border-radius: 0;
      font-family: "FuraCode Nerd Font Mono";
    }

    window#waybar {
      background: #2f1e2e;
    }

    #mpd, #cpu {
      background: #48b685;
      color: #2f1e2e;
    }

    #pulseaudio {
      background: #fec418;
      color: #2f1e2e;
    }

    #network, #tray {
      background: #06b6ef;
      color: #2f1e2e;
    }

    #memory {
      background: #815ba4;
    }

    #language {
      background: #5bc4bf;
    }

    #clock {
      background: #776e71;
    }

    .urgent {
      background: #ef6155;
    }
  '';
}