bash prompt with color, xterm title setting, and ssh host in title

bashprompt.sh

# Goes in .bashrc
# Heavily cribbed from 
# https://stackoverflow.com/a/16715681
# and inspired by 
# https://unix.stackexchange.com/a/420090
__prompt_command() {
local EXIT="$?"             # This needs to be first
    PS1=""

    local RCol='\[\e[0m\]'

    local Red='\[\e[0;31m\]'
    local Gre='\[\e[0;32m\]'
    local BYel='\[\e[1;33m\]'
    local BBlu='\[\e[1;34m\]'
    local Pur='\[\e[0;35m\]'
    local termtitle='\e]2;\u@\h\a'

    if [ $EXIT != 0 ]; then
        PS1+="${Red}\u${RCol}"      # Add red if exit code non 0
    else
        PS1+="${Gre}\u${RCol}"
    fi

    PS1+="${RCol}@${BBlu}\h ${Pur}\w${BYel}$ ${RCol}"
    PS1+="${termtitle}"
}
PROMPT_COMMAND=__prompt_command # Func to gen PS1 after CMDs
ssh() {
        printf "\e]2;$*\a"
        command ssh "$@"
}