global

def highlight(mark = PASS)
  case mark
  when PASS; rainbowify PASS_ARY[@color_index%2]
  when FAIL; "\e[31m#{mark}\e[0m"
  when ERROR; "\e[33m#{mark}\e[0m"
  when PENDING; "\e[33m#{mark}\e[0m"
  else mark
  end
end