diff --git a/maintainers/maintainer-list.nix b/maintainers/maintainer-list.nix
index e47fa02e5f23..14c49a54826b 100644
--- a/maintainers/maintainer-list.nix
+++ b/maintainers/maintainer-list.nix
@@ -2496,6 +2496,12 @@
     githubId = 40521440;
     name = "Haruka Akiyama";
   };
+  fuzen = {
+    email = "me@fuzen.cafe";
+    github = "fuzen-py";
+    githubId = 17859309;
+    name = "Fuzen";
+  };
   fuzzy-id = {
     email = "hacking+nixos@babibo.de";
     name = "Thomas Bach";
diff --git a/pkgs/data/themes/sweet/default.nix b/pkgs/data/themes/sweet/default.nix
new file mode 100644
index 000000000000..9d3603cbf520
--- /dev/null
+++ b/pkgs/data/themes/sweet/default.nix
@@ -0,0 +1,47 @@
+{ stdenv, fetchurl, unzip }:
+
+stdenv.mkDerivation rec {
+  pname = "sweet";
+  version = "1.10.5";
+
+  srcs = [
+    (fetchurl {
+      url = "https://github.com/EliverLara/Sweet/releases/download/v${version}/Sweet-Ambar-Blue.zip";
+      sha256 = "11040hx8ci4vbnyaj63zj924v0ln7rjm9a28mcqdax60h3dp12lj";
+    })
+    (fetchurl {
+      url = "https://github.com/EliverLara/Sweet/releases/download/v${version}/Sweet-Ambar.zip";
+      sha256 = "0lvnjmirpwdav8q0bfbhybwkr2h6dilc7lhhj18xd2k57xadjmxr";
+    })
+    (fetchurl {
+      url = "https://github.com/EliverLara/Sweet/releases/download/v${version}/Sweet-Dark.zip";
+      sha256 = "0a7mh1pgvi8w1ahsmvgnmpdawm30lcjqk4zqvg0lqadsd04dn4h1";
+    })
+    (fetchurl {
+      url = "https://github.com/EliverLara/Sweet/releases/download/v${version}/Sweet-mars.zip";
+      sha256 = "0n2dkl35qrik10wvhvkayyra987p03g56pxhz5kc73cbsl5zd96l";
+    })
+    (fetchurl {
+      url = "https://github.com/EliverLara/Sweet/releases/download/v${version}/Sweet.zip";
+      sha256 = "0wwmc3wj2pjg4kimfkvcsimk3s4s7l7k000vxqi8yjlfs70f273c";
+    })
+  ];
+
+  nativeBuildInputs = [ unzip ];
+
+  sourceRoot = ".";
+
+  installPhase = ''
+    mkdir -p $out/share/themes/
+    cp -a Sweet* $out/share/themes/
+    rm $out/share/themes/*/{LICENSE,README*}
+  '';
+
+  meta = with stdenv.lib; {
+    description = "Light and dark colorful Gtk3.20+ theme";
+    homepage = "https://github.com/EliverLara/Sweet";
+    license = licenses.gpl3;
+    maintainers = with maintainers; [ fuzen ];
+    platforms = platforms.linux;
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index cff5ed262b3c..2aacc9d2d7ad 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -17578,6 +17578,8 @@ in
 
   shades-of-gray-theme = callPackage ../data/themes/shades-of-gray { };
 
+  sweet = callPackage ../data/themes/sweet { };
+
   mime-types = callPackage ../data/misc/mime-types { };
 
   shared-mime-info = callPackage ../data/misc/shared-mime-info { };