Color Keyboard Script

#! /bin/bash
#changes keyboard colors on clevo laptops. Tested on P170EM
#Noah B.

#Prompt for root
[ "$UID" -eq 0 ] || exec sudo bash "$0" "$@"

off=000
white=111
green=100
red=010
blue=001
yellow=110
purple=011
aqua=101

left=$1
l_code=000
middle=$2
m_code=000
right=$3
r_code=000

#LEFT SIDE

if [ -z "$left" ]
then
    echo "Enter desired color for the left side:
    (off/white/green/red/blue/yellow/purple/aqua)"
read -p "Color choice: " left
fi

eval "l_code=\$$left"

echo $l_code > /sys/devices/platform/clevo_wmi/kbled/left

#MIDDLE

if [ -z "$middle" ]
then
        echo "Enter desired color for the middle:
        (off/white/green/red/blue/yellow/purple/aqua)"
read -p "Color choice: " middle
fi

eval "m_code=\$$middle"

echo $m_code > /sys/devices/platform/clevo_wmi/kbled/middle

#RIGHT SIDE

if [ -z "$right" ]
then
        echo "Enter desired color for the right side:
        (off/white/green/red/blue/yellow/purple/aqua)"
read -p "Color choice: " right
fi

eval "r_code=\$$right"

echo $r_code > /sys/devices/platform/clevo_wmi/kbled/right