Added initial working script with Makefile for easy packaging.

Makefile

@@ -0,0 +1,76 @@
+.PHONY: install uninstall
+
+all:
+	@echo "Nothing to compile. Use 'make [DESTDIR=dir] install' to install wl-color-picker."
+
+install:
+	@if [ "$$DESTDIR" = "" ]; then \
+		if [ "$$(id -u)" -ne 0 ]; then \
+			echo "Please execute this script as root."; \
+			exit 1; \
+		fi; \
+	fi;
+
+	@depends="grim slurp convert zenity wl-copy"; \
+	for dependency in $$(echo "$$depends" | xargs) ; do \
+		echo "Checking for: $$dependency."; \
+		if ! which "$$dependency" > /dev/null 2>&1 ; then \
+			echo "  error: Required dependency '$$dependency' is missing."; \
+			exit 1; \
+		else \
+			echo "  '$$dependency' found!"; \
+		fi; \
+	done;
+
+	@echo
+
+	@if [ -e "$$DESTDIR/usr/bin/wl-color-picker" ]; then \
+		echo "Please un-install the previous version first"; \
+		exit 1; \
+	fi; \
+
+	@if [ ! -d "$$DESTDIR/usr/bin" ]; then \
+		mkdir -p "$$DESTDIR/usr/bin"; \
+	fi;
+
+	@if [ ! -d "$$DESTDIR/usr/share/applications" ]; then \
+		mkdir -p "$$DESTDIR/usr/share/applications"; \
+	fi;
+
+	@if [ ! -d "$$DESTDIR/usr/share/icons" ]; then \
+		mkdir -p "$$DESTDIR/usr/share/icons"; \
+	fi;
+
+	@if [ ! -d "$$DESTDIR/usr/share/icons/hicolor/scalable/apps" ]; then \
+		mkdir -p "$$DESTDIR/usr/share/icons/hicolor/scalable/apps"; \
+	fi;
+
+	@echo 'Copying wl-color-picker'
+	@echo
+
+	cp wl-color-picker.sh "$$DESTDIR/usr/bin/wl-color-picker"
+	cp wl-color-picker.png "$$DESTDIR/usr/share/icons/"
+	cp wl-color-picker.svg "$$DESTDIR/usr/share/icons/hicolor/scalable/apps/"
+	cp wl-color-picker.desktop "$$DESTDIR/usr/share/applications/"
+
+	@echo
+	@echo 'Done!'
+
+	@exit 0
+
+uninstall:
+	@if [ "$$(id -u)" != "0" ]; then \
+		echo "Please execute uninstallation as root."; \
+		exit 1; \
+	fi;
+
+	@echo 'Uninstalling wl-color-picker'
+	@echo
+
+	rm "/usr/bin/wl-color-picker"
+	rm "/usr/share/icons/wl-color-picker.png"
+	rm "/usr/share/icons/hicolor/scalable/apps/wl-color-picker.svg"
+	rm "/usr/share/applications/wl-color-picker.desktop"
+
+	@echo
+	@echo 'Done!'

README.md

@@ -1,2 +1,27 @@
 # wl-color-picker
-A wayland color picker that also works on wlroots
+
+A script that provides a working color picker for wayland and wlroots
+by leveraging [grim](https://github.com/emersion/grim) and
+[slurp](https://github.com/emersion/slurp).
+
+## Inspiration
+
+This script is possible by the information provided on the following
+sites:
+
+* https://www.trst.co/simple-colour-picker-in-sway-wayland.html
+* https://unix.stackexchange.com/questions/320070/is-there-a-colour-picker-that-works-with-wayland-or-xwayland/523805#523805
+
+## Artwork
+
+The icon was taken from the gcolor3 icon shipped with the
+[papirus icon theme](https://github.com/PapirusDevelopmentTeam/papirus-icon-theme),
+so all credits go to the papirus icon designers.
+
+## Dependencies
+
+* __slurp__ - provides the screen location picker
+* __grim__ - uses the location provided by slurp and generates a pixel
+* __convert__ - uitlity from imagemagick to make the pixel a hex number
+* __zenity__ - display a nice color selector dialog where the picked color can be tweaked further
+* __wl-copy__ - copy the selected color to the clipboard

wl-color-picker.desktop

@@ -0,0 +1,11 @@
+[Desktop Entry]
+Type=Application
+Name=Color Picker for Wayland
+GenericName=Color Picker
+Comment=A simple wayland color picker that also works on wlroots.
+Keywords=color;picker;wl-color-picker;
+Categories=Graphics;2DGraphics;
+Exec=wl-color-picker
+Hidden=false
+Terminal=false
+Icon=wl-color-picker

wl-color-picker.sh

@@ -0,0 +1,38 @@
+#!/bin/bash
+#
+# License: MIT
+#
+# A script to easily pick a color on a wayland session by using:
+# slurp to select the location, grim to get the pixel, convert
+# to make the pixel a hex number and zenity to display a nice color
+# selector dialog where the picked color can be tweaked further.
+#
+# The script was possible thanks to the useful information on:
+# https://www.trst.co/simple-colour-picker-in-sway-wayland.html
+# https://unix.stackexchange.com/questions/320070/is-there-a-colour-picker-that-works-with-wayland-or-xwayland/523805#523805
+#
+
+# Get color position
+position=$(slurp -b 00000000 -p)
+
+# Sleep at least for a second to prevet issues with grim always
+# returning improper color.
+sleep 1
+
+# Store the hex color value
+color=$(grim -g "$position" -t ppm - | convert - -format '%[pixel:p{0,0}]' txt:- | tail -n 1 | cut -d ' ' -f 4)
+
+# Display a color picker and store the returned rgb color
+rgb_color=$(zenity --color-selection --title="Copy color to Clipboard" --color="${color}")
+
+# Execute if user didn't click cancel
+if [ "$rgb_color" != "" ]; then
+    # Convert rgb color to hex
+    hex_color="#"
+    for value in $(echo "${rgb_color}" | grep -E -o -m1 '[0-9]+'); do
+        hex_color="$hex_color$(printf "%.2x" $value)"
+    done
+
+    # Copy user selection to clipboard
+    echo $hex_color | wl-copy
+fi