setuid 적용파일의 color 변경.

 # cat /etc/DIR_COLORS
...
# Attribute codes:
# 00=none 01=bold 04=underscore 05=blink 07=reverse 08=concealed
# Text color codes:
# 30=black 31=red 32=green 33=yellow 34=blue 35=magenta 36=cyan 37=white
# Background color codes:
# 40=black 41=red 42=green 43=yellow 44=blue 45=magenta 46=cyan 47=white
NORMAL 00   # global default, although everything should be something.
...
SETUID 37;41    # file that is setuid (u+s)
SETGID 30;43    # file that is setgid (g+s)
STICKY_OTHER_WRITABLE 30;42 # dir that is sticky and other-writable (+t,o+w)
OTHER_WRITABLE 34;42 # dir that is other-writable (o+w) and not sticky
STICKY 37;44    # dir with the sticky bit set (+t) and not other-writable
 
# This is for files with execute permission:
EXEC 01;32
...