arch-basic/bspwm/polybar/shades/scripts/random.sh

#!/usr/bin/env bash

# Color files
PFILE="$HOME/.config/polybar/shades/colors.ini"
RFILE="$HOME/.config/polybar/shades/scripts/rofi/colors.rasi"

# Change colors
change_color() {
	# polybar
	sed -i -e "s/background = #.*/background = $BG/g" $PFILE
	sed -i -e "s/foreground = #.*/foreground = $FG/g" $PFILE
	sed -i -e "s/foreground-alt = #.*/foreground-alt = $FGA/g" $PFILE
	sed -i -e "s/shade1 = #.*/shade1 = $SH1/g" $PFILE
	sed -i -e "s/shade2 = #.*/shade2 = $SH2/g" $PFILE
	sed -i -e "s/shade3 = #.*/shade3 = $SH3/g" $PFILE
	sed -i -e "s/shade4 = #.*/shade4 = $SH4/g" $PFILE
	sed -i -e "s/shade5 = #.*/shade5 = $SH5/g" $PFILE
	sed -i -e "s/shade6 = #.*/shade6 = $SH6/g" $PFILE
	sed -i -e "s/shade7 = #.*/shade7 = $SH7/g" $PFILE
	sed -i -e "s/shade8 = #.*/shade8 = $SH8/g" $PFILE
	
	# rofi
	cat > $RFILE <<- EOF
	/* colors */

	* {
	  al:    #00000000;
	  bg:    ${BG}FF;
	  bg1:   ${SH2}FF;
	  bg2:   ${SH3}FF;
	  bg3:   ${SH4}FF;
	  bg4:   ${SH5}FF;
	  fg:    ${FG}FF;
	}
	EOF
	
	polybar-msg cmd restart
}

get_random_number() {
	RNUM=$(( ($RANDOM % $1) + 1 ))
}

get_random_color() {
	RCOLOR="#"
	for i in 1 2 3 4 5 6
	do
		get_random_number "16"
		case $RNUM in
			"1") NEXTDIGIT="1";;
			"2") NEXTDIGIT="2";;
			"3") NEXTDIGIT="3";;
			"4") NEXTDIGIT="4";;
			"5") NEXTDIGIT="5";;
			"6") NEXTDIGIT="6";;
			"7") NEXTDIGIT="7";;
			"8") NEXTDIGIT="8";;
			"9") NEXTDIGIT="9";;
			"10") NEXTDIGIT="A";;
			"11") NEXTDIGIT="B";;
			"12") NEXTDIGIT="C";;
			"13") NEXTDIGIT="D";;
			"14") NEXTDIGIT="E";;
			"15") NEXTDIGIT="F";;
			"16") NEXTDIGIT="0";;
		esac
		RCOLOR="$RCOLOR$NEXTDIGIT"
	done
	echo $RCOLOR
}

# Main
BG='#1f1f1f'	# change to light bg
FG='#FFFFFF'	# change to dark fg
FGA='#656565'	# change to gray fg
SH1=`get_random_color`
SH2=`get_random_color`
SH3=`get_random_color`
SH4=`get_random_color`
SH5=`get_random_color`
SH6=`get_random_color`
SH7=`get_random_color`
SH8=`get_random_color`

change_color