Colored File Descriptor

fd-setcolor.sh

#!/bin/bash

# just put this at the beginning of your scripts
trap "{ sleep 1; }" EXIT
red="" ; [ -t 1 ] && [ -t 2 ] && red="$(tput setaf 1)"
rst="" ; [ -t 1 ] && [ -t 2 ] && rst="$(tput sgr0)"
logdir="/tmp"
exec 3> "$logdir/raw.log"
exec 2> >( awk '{print strftime("%Y%m%dT%H:%M:%S%z")" - STDERR - "$0 ; fflush(stdout)}' | tee -a $logdir/${0%.*}.err > >( awk '{print "'$red'"$0"'$rst'" ; fflush(stdout)}' ))
exec 1> >( awk '{print strftime("%Y%m%dT%H:%M:%S%z")" - STDOUT - "$0 ; fflush(stdout)}' | tee -a $logdir/${0%.*}.out)

# example
echo stdout
echo stderr >&2
echo rawout >&3