Выделение имени сервера цветом

.bashrc

# ANSI color codes
RS="\[\033[0m\]"    # reset
HC="\[\033[1m\]"    # hicolor
UL="\[\033[4m\]"    # underline
INV="\[\033[7m\]"   # inverse background and foreground
FBLK="\[\033[30m\]" # foreground black
FRED="\[\033[31m\]" # foreground red
FGRN="\[\033[32m\]" # foreground green
FYEL="\[\033[33m\]" # foreground yellow
FBLE="\[\033[34m\]" # foreground blue
FMAG="\[\033[35m\]" # foreground magenta
FCYN="\[\033[36m\]" # foreground cyan
FWHT="\[\033[37m\]" # foreground white
BBLK="\[\033[40m\]" # background black
BRED="\[\033[41m\]" # background red
BGRN="\[\033[42m\]" # background green
BYEL="\[\033[43m\]" # background yellow
BBLE="\[\033[44m\]" # background blue
BMAG="\[\033[45m\]" # background magenta
BCYN="\[\033[46m\]" # background cyan
BWHT="\[\033[47m\]" # background white

SERVER_NAME="my-server"

if [ "$color_prompt" = yes ]; then
    PS1="$HC$FCYN${debian_chroot:+($debian_chroot)}\u@$SERVER_NAME$RS$HC$FYEL: $FCYN\w$RS "
    PS2="$HC$FYEL-> $RS"
else
    PS1="${debian_chroot:+($debian_chroot)}\u: \w "
    PS2="-> "
fi

SERVER_NAME="my-server" - колхоз, но не заморачивался поисками нормального способа сделать это.