Logging in bash

log.sh

NC='\033[0m'

function log_info {
    green "INFO" "${1}"
}

function log_warn {
    orange "WARN$" "${1}"
}

function log_err {
    red "ERROR" "${1}"
}

function green {
    COLOR='\033[0;32m'
    colored "${COLOR}" "${1}" "${2}"
}

function orange {
    COLOR='\033[0;33m'
    colored "${COLOR}" "${1}" "${2}"
}

function red {
    COLOR='\033[0;31m'
    colored "${COLOR}" "${1}" "${2}"
}

function blue {
    COLOR='\033[0;34m'
    colored "${COLOR}" "${1}" "${2}"
}

function purple {
    COLOR='\033[0;35m'
    colored "${COLOR}" "${1}" "${2}"
}

function cyan {
    COLOR='\033[0;36m'
    colored "${COLOR}" "${1}" "${2}"
}

function colored {
    log "${1}${2}${NC}" "${3}"
}

function log {
    severity="${1}"
    msg="${2}"
    (>&2 echo -e "[${severity}] [$(date '+%Y-%m-%d %H:%M:%S')] ${msg}")
}