Terminal background color change for remote ssh

ssh_terminal_bg_color_change

#!/bin/bash

# Notes:
#   Local window font is white on black background.  On exiting from any ssh active terminal window resets to this config.
#   Remote ssh terminal is chosen with type of server connected - Prod has reddish bg, dev vm has gray bg, etc.

HOSTNAME=`echo $@ | sed s/.*@//`
# echo $HOSTNAME, $@
if [ ${HOSTNAME} ]; then
    echo "ssh to $HOSTNAME"
    sleep 1
else
    echo "Missing ssh host. Exiting."
    exit 1
fi

set_bg_color () {
    # color values are in '{R, G, B, A}' format, all 16-bit unsigned integers (0-65535)
    osascript -e "tell application \"Terminal\" to set background color of window 1 to $1"
}

set_font_color () {
    osascript -e "tell application \"Terminal\" " \
              -e    "tell selected tab of front window" \
              -e        "set normal text color to $1" \
              -e    "end tell" \
              -e "end tell"
}
                                                                                                                                                                                                          
on_exit () {
    set_bg_color   "{0, 0, 0, 50000}"               # Black bg
    set_font_color "{65000, 65000, 65000, 50000}"   # White font
}
trap on_exit EXIT

# Main
case $HOSTNAME in 

    # My VM with white fonts on dark gray 
    dev-vm.x.org) 
        set_bg_color    "{15000, 15000, 15000, 50000}"
        ;;

    # Prod "ER" systems
    prod1-er.x.org)
        set_bg_color    "{40000, 8000, 8000, 50000}"
        set_font_color  "{0, 0, 0, 50000}"
        ;;
    prod2-er.x.org)
        set_bg_color    "{40000, 8000, 8000, 50000}"
        set_font_color  "{0, 0, 0, 50000}"
        ;;

    # Prod "EDW" systems
    prod1-edw.x.org)
        set_bg_color    "{40000, 10000, 10000, 50000}"
        set_font_color  "{65000, 65000, 65000, 50000}"
        ;;
    prod2-edw.x.org)      
        set_bg_color    "{40000, 10000, 10000, 50000}" 
        set_font_color  "{65000, 65000, 65000, 50000}"
        ;;

    # QA black fonts on light blue
    qa-er.x.org)
        set_bg_color    "{45000, 50000, 65000, 50000}"
        set_font_color  "{0, 0, 0, 50000}"
        ;;
    qa-er.x.org)
        set_bg_color    "{45000, 50000, 65000, 50000}"
        set_font_color  "{0, 0, 0, 50000}"
        ;;

esac

# Now ssh to remote
/usr/bin/ssh "$@"
        
# Color combination examples:
# set_bg_color "{65535, 65535,  65535,  50000}"  # White
# set_bg_color "{65535, 65535,  65535,  50000}"  # White
# set_bg_color "{40000, 40000,  40000,  50000}"  # Light Gray
# set_bg_color "{0,     0,      0,      50000}"  # Black
# set_bg_color "{10000, 0,      0,      -16373}" # WineRed