Bash script to color tap output

tap-color.sh

#!/usr/bin/env bash

RED=$(printf "\033[31m")
GREEN=$(printf "\033[32m")
GRAY=
CLOSING=$(printf "\033[m")

function color_not_ok() {
  sed "/^not ok/{; s/^/${RED}/; s/$/${CLOSING}/; }"
}

function color_ok() {
  sed "/^ok/{; s/^/"${GREEN}"/; s/$/"${CLOSING}"/; }"
}

function color_debug() {
  sed "/^#/{; s/^/"${GRAY}"/; s/$/"${CLOSING}"/; }"
}

cat \
  | color_not_ok \
  | color_ok \
  | color_debug

Usage my-test-script | ./tap-color.sh