diff --git a/desktop/gtk-theme-Greybird/README b/desktop/gtk-theme-Greybird/README
new file mode 100644
index 0000000000..d9185b2e3e
--- /dev/null
+++ b/desktop/gtk-theme-Greybird/README
@@ -0,0 +1,5 @@
+gtk-theme-Greybird (Desktop Suite for Xfce)
+
+Greybird is a Desktop Suite for Xfce.
+
+Optional dependencies: gtk-engines, gtk-engines-unico, murrine.
diff --git a/desktop/gtk-theme-Greybird/doinst.sh b/desktop/gtk-theme-Greybird/doinst.sh
new file mode 100644
index 0000000000..9424ce43ff
--- /dev/null
+++ b/desktop/gtk-theme-Greybird/doinst.sh
@@ -0,0 +1,13 @@
+if [ -x /usr/bin/update-desktop-database ]; then
+  /usr/bin/update-desktop-database -q usr/share/applications >/dev/null 2>&1
+fi
+
+if [ -x /usr/bin/update-mime-database ]; then
+  /usr/bin/update-mime-database usr/share/mime >/dev/null 2>&1
+fi
+
+if [ -e usr/share/icons/hicolor/icon-theme.cache ]; then
+  if [ -x /usr/bin/gtk-update-icon-cache ]; then
+    /usr/bin/gtk-update-icon-cache usr/share/icons/hicolor >/dev/null 2>&1
+  fi
+fi
diff --git a/desktop/gtk-theme-Greybird/gtk-theme-Greybird.SlackBuild b/desktop/gtk-theme-Greybird/gtk-theme-Greybird.SlackBuild
new file mode 100644
index 0000000000..4521738dc5
--- /dev/null
+++ b/desktop/gtk-theme-Greybird/gtk-theme-Greybird.SlackBuild
@@ -0,0 +1,65 @@
+#!/bin/sh
+#
+# Slackware build script for gtk-theme-Greybird.
+#
+# Copyright 2016 Edinaldo P. Silva, Rio de Janeiro, Brazil.
+# All rights reserved.
+#
+# Redistribution and use of this script, with or without modification, is
+# permitted provided that the following conditions are met:
+#
+# 1. Redistributions of this script must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+#
+#  THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED
+#  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+#  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
+#  EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+#  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+#  OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+#  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+#  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+#  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+PRGNAM="gtk-theme-Greybird"
+VERSION=${VERSION:-3.20.0}
+BUILD=${BUILD:-1}
+TAG=${TAG:-_SBo}
+
+ARCH=noarch
+
+TMP=${TMP:-/tmp/SBo}
+PKG=$TMP/package-$PRGNAM
+OUTPUT=${OUTPUT:-/tmp}
+CWD=$(pwd)
+
+set -e
+
+SRCNAM="Greybird"
+
+rm -rf $PKG
+mkdir -p $TMP $PKG $OUTPUT
+cd $TMP
+rm -rf $PRGNAM-$VERSION
+mkdir $PRGNAM-$VERSION
+tar xvf $CWD/$SRCNAM-$VERSION.tar.gz -C $PRGNAM-$VERSION
+cd $PRGNAM-$VERSION
+chown -R root:root .
+
+# remove Unity and git stuff.
+rm -rf $SRCNAM-$VERSION/{.gitignore,unity,ubiquity-panel-bg.png}
+
+mkdir -p $PKG/usr/share/themes
+cp -a $SRCNAM-$VERSION $PKG/usr/share/themes/Greybird
+
+mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
+mv $PKG/usr/share/themes/Greybird/{LICENSE.*,README.md} $PKG/usr/doc/$PRGNAM-$VERSION
+cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild
+
+mkdir -p $PKG/install
+cat $CWD/slack-desc > $PKG/install/slack-desc
+cat $CWD/doinst.sh > $PKG/install/doinst.sh
+
+cd $PKG
+/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.${PKGTYPE:-tgz}
diff --git a/desktop/gtk-theme-Greybird/gtk-theme-Greybird.info b/desktop/gtk-theme-Greybird/gtk-theme-Greybird.info
new file mode 100644
index 0000000000..36e82773c9
--- /dev/null
+++ b/desktop/gtk-theme-Greybird/gtk-theme-Greybird.info
@@ -0,0 +1,10 @@
+PRGNAM="gtk-theme-Greybird"
+VERSION="3.20.0"
+HOMEPAGE="https://github.com/shimmerproject/Greybird/"
+DOWNLOAD="https://github.com/shimmerproject/Greybird/archive/v3.20.0/Greybird-3.20.0.tar.gz"
+MD5SUM="5d370ea191fa53e7ab44b7763a1b9180"
+DOWNLOAD_x86_64=""
+MD5SUM_x86_64=""
+REQUIRES=""
+MAINTAINER="Edinaldo P. Silva"
+EMAIL="edps.mundognu@gmail.com"
diff --git a/desktop/gtk-theme-Greybird/slack-desc b/desktop/gtk-theme-Greybird/slack-desc
new file mode 100644
index 0000000000..01d6aac45a
--- /dev/null
+++ b/desktop/gtk-theme-Greybird/slack-desc
@@ -0,0 +1,19 @@
+# HOW TO EDIT THIS FILE:
+# The "handy ruler" below makes it easier to edit a package description.
+# Line up the first '|' above the ':' following the base package name, and
+# the '|' on the right side marks the last column you can put a character in.
+# You must make exactly 11 lines for the formatting to be correct.  It's also
+# customary to leave one space after the ':' except on otherwise blank lines.
+
+                  |-----handy-ruler------------------------------------------------------|
+gtk-theme-Greybird: gtk-theme-Greybird (Desktop Suite for Xfce)
+gtk-theme-Greybird:
+gtk-theme-Greybird: Greybird is a Desktop Suite for Xfce.
+gtk-theme-Greybird:
+gtk-theme-Greybird: Home page: https://github.com/shimmerproject/Greybird/
+gtk-theme-Greybird:
+gtk-theme-Greybird:
+gtk-theme-Greybird:
+gtk-theme-Greybird:
+gtk-theme-Greybird:
+gtk-theme-Greybird: