#!/bin/bash

[ -z "$1" ] && echo "Usage: ${0##*/} string" && exit 1

string="$*"

for (( i=0 ; i <= "${#string}" ; i++ )); do
	echo -ne "\e[38;5;$(($RANDOM%256))m${string:${i}:1}"
done	
echo -e "\e[0;0m"