Add modified copy of /etc/DIR_COLORS to get ls colors in screen

Due to OS update on Freya 2019-11-06

.dir_colors

+# Configuration file for the color ls utility
+#
+# This file goes in the /etc directory, and must be world readable.
+# You can copy this file to .dir_colors in your $HOME directory to override
+# the system defaults.
+
+# COLOR needs one of these arguments: 'tty' colorizes output to ttys, but not
+# pipes. 'all' adds color characters to all output. 'none' shuts colorization
+# off.
+COLOR tty
+
+# Extra command line options for ls go here.
+# Basically these ones are:
+#  -F = show '/' for dirs, '*' for executables, etc.
+#  -T 0 = don't trust tab spacing when formatting ls output.
+OPTIONS -F -T 0
+
+# Below, there should be one TERM entry for each termtype that is colorizable
+TERM linux
+TERM linux-c
+TERM console
+TERM con132x25
+TERM con132x30
+TERM con132x43
+TERM con132x60
+TERM con80x25
+TERM con80x28
+TERM con80x30
+TERM con80x43
+TERM con80x50
+TERM con80x60
+TERM gnome
+TERM mach-color
+TERM rxvt
+TERM rxvt-unicode
+TERM screen
+TERM screen-w
+TERM screen-256color
+TERM vt100
+TERM vt102
+TERM xterm
+TERM xterm-debian
+TERM xterm-256color
+TERM iterm
+TERM screen.xterm-256color
+
+# EIGHTBIT, followed by '1' for on, '0' for off. (8-bit output)
+EIGHTBIT 1
+
+# Below are the color init strings for the basic file types. A color init
+# string consists of one or more of the following numeric codes:
+#
+# 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.
+FILE   00       # normal file
+DIR    01;34    # directory
+LINK   00;36    # symbolic link
+FIFO   40;33    # pipe
+SOCK   01;35    # socket
+DOOR   01;35    # door
+BLK    40;33;01 # block device driver
+CHR    40;33;01 # character device driver
+ORPHAN 41;33;01 # symlink to nonexistent file
+
+# This is for files with execute permission:
+EXEC 00;32
+
+# List any file extensions like '.gz' or '.tar' that you would like ls
+# to colorize below. Put the extension, a space, and the color init string.
+# (and any comments you want to add after a '#')
+
+# executables (bright green)
+.cmd  00;32
+.exe  01;32
+.com  01;32
+.bat  01;32
+.btm  01;32
+.dll  01;32
+
+# archives or compressed
+.tar  00;31
+.tbz  00;31
+.tgz  00;31
+.rpm  00;31
+.deb  00;31
+.arj  00;31
+.taz  00;31
+.lzh  00;31
+.lzma 00;31
+.zip  00;31
+.zoo  00;31
+.z    00;31
+.Z    00;31
+.gz   00;31
+.bz2  00;31
+.tb2  00;31
+.tz2  00;31
+.tbz2 00;31
+.xz   00;31
+
+# image formats
+.avi  01;35
+.bmp  01;35
+.dl   01;35
+.fli  01;35
+.gif  01;35
+.gl   01;35
+.jpg  01;35
+.jpeg 01;35
+.mkv  01;35
+.mng  01;35
+.mov  01;35
+.mp4  01;35
+.mpg  01;35
+.pcx  01;35
+.pbm  01;35
+.pgm  01;35
+.png  01;35
+.ppm  01;35
+.svg  01;35
+.tga  01;35
+.tif  01;35
+.webm 01;35
+.webp 01;35
+.wmv  01;35
+.xbm  01;35
+.xcf  01;35
+.xpm  01;35
+
+# sound formats
+.aiff 00;32
+.ape  00;32
+.au   00;32
+.flac 00;32
+.m4a  00;32
+.mid  00;32
+.mp3  00;32
+.mpc  00;32
+.ogg  00;32
+.voc  00;32
+.wav  00;32
+.wma  00;32
+.wv   00;32
+