Dynamic panel transparency (Budgie) like in Mate Desktop

dynamic_transparency.sh

#!/bin/bash

# Dynamic panel transparency (Budgie) like in Mate Desktop
# This script sets the top panel to full transparency if no maximized window is on the current workspace.
# Sort of like Dynamic Transparency with budgie-panel’s in Solus.
# Whenever there is a maximized window on a workspace the top panel will turn off transparency.
# The only issue is that clock applet opacity isn’t changing.
# Save, make executable, run on startup

# Requires: xprop, imagemagick

# check if xprop is installed
if ! hash xprop; then
   echo "Install xprop!"
   exit 1
fi

if ! hash convert; then
   echo "Install ImageMagick!"
   exit 1
fi

##################################
# Adjust values to suit
PANEL=top
PANEL_ALPHA_REGULAR=0.65
PANEL_ALPHA_MAXIMUM=0.90
##################################
##################################
# don't change anything below here

gsettings set org.mate.panel.toplevel.background:/org/mate/panel/toplevels/top/background/ type "none"
if [[ "${PANEL}" == "top" ]]; then
    PANEL_XID="$(xwininfo -root -children \
           | awk '/[Tt]op\ [Pp]anel.*[Mm]ate-[Pp]anel/ {print $1}')"
elif [[ "${PANEL}" == "bottom" ]]; then
        PANEL_XID="$(xwininfo -root -children \
           | awk '/[Bb]ottom\ [Pp]anel.*[Mm]ate-[Pp]anel/ {print $1}')"
elif [[ "${PANEL}" == "left" ]]; then
        PANEL_XID="$(xwininfo -root -children \
           | awk '/[Ll]eft\ [Pp]anel.*[Mm]ate-[Pp]anel/ {print $1}')"
elif [[ "${PANEL}" == "right" ]]; then
        PANEL_XID="$(xwininfo -root -children \
           | awk '/[Rr]ight\ [Pp]anel.*[Mm]ate-[Pp]anel/ {print $1}')"
else
    echo "Unknown panel position"; exit 1
fi

 COL="$(import -window ${PANEL_XID} -colorspace sRGB -set colorspace RGB -format %c histogram:info: \
      | sort -r -n | head -n 1 | grep -oE "rgb.*" | grep -oE "[0-9]*,[0-9]*,[0-9]*")"

GTK_THEME="$(gsettings get org.mate.interface gtk-theme)"
gsettings set org.mate.panel.toplevel.background:/org/mate/panel/toplevels/top/background/ type "color"

CURR=0
while true
do
    # Theme changed
    if [[ "${GTK_THEME}" != "$(gsettings get org.mate.interface gtk-theme)" ]]
    then
        GTK_THEME="$(gsettings get org.mate.interface gtk-theme)"
		gsettings set org.mate.panel.toplevel.background:/org/mate/panel/toplevels/top/background/ type "none"
         COL="$(import -window ${PANEL_XID} -colorspace sRGB -set colorspace RGB -format %c histogram:info: \
      | sort -r -n | head -n 1 | grep -oE "rgb.*" | grep -oE "[0-9]*,[0-9]*,[0-9]*")"
		gsettings set org.mate.panel.toplevel.background:/org/mate/panel/toplevels/${PANEL}/background/ type "color"
    fi

	MAX_FND=0
	for w in $(xprop -notype -root _NET_CLIENT_LIST 2>/dev/null | cut -d'#' -f2 | tr ',' '\n' | awk '{print $1}')
   	do 
                if [[ "$(xprop -id $w -notype _NET_WM_DESKTOP 2>/dev/null | cut -d' ' -f3)" -eq "$(xprop -root -notype _NET_CURRENT_DESKTOP 2>/dev/null | cut -d' ' -f3)" ]]
                then
		   if xprop -id $w _NET_WM_STATE | grep -E "MAXIMIZED_HORZ.*MAXIMIZED_VERT|MAXIMIZED_VERT.*MAXIMIZED_HORZ" > /dev/null 2>&1
		   then
			if xprop -id $w WM_STATE | grep -E "window state: Normal" > /dev/null 2>&1
			then
				MAX_FND=1
				break
			fi
		   fi
                fi
	done

	if [[ $MAX_FND -eq 1 && $CURR -eq 0 ]]
	then

            gsettings set org.mate.panel.toplevel.background:/org/mate/panel/toplevels/${PANEL}/background/ color "rgba(${COL},$PANEL_ALPHA_MAXIMUM)"
            # echo "rgba(${COL},$PANEL_ALPHA_MAXIMUM)"
		CURR=1			
	elif [[ $MAX_FND -eq 0 && $CURR -eq 1 ]]
	then

            gsettings set org.mate.panel.toplevel.background:/org/mate/panel/toplevels/${PANEL}/background/ color "rgba(${COL},$PANEL_ALPHA_REGULAR)"
            # echo "rgba(${COL},$PANEL_ALPHA_REGULAR)"
		CURR=0
	fi
	

	sleep 1
done
exit 0