This is the setup I use for my bash prompts in various environments. I simply add the following to my .bashrc file. This is more a reference for me but if you find it useful give it a go and play around with the various colors.
Custom Prompt###############
set_prompt () {
Reset='\[\e[0m\]'
Black='\[\e[0;30m\]'
Blue='\[\e[0;34m\]'
Green='\[\e[0;32m\]'
Cyan='\[\e[0;36m\]'
Red='\[\e[0;31m\]'
Purple='\[\e[0;35m\]'
Brown='\[\e[0;33m\]'
if [$(whoami) == 'root'] || [[$(whoami) == *"prod"*]] || [[$(whoami) == *"PROD"*]]; then
PrimaryColor="${Red}"
SecondaryColor="${Brown}"
promptSymbol="${Red}!! "
else
PrimaryColor="${Green}"
SecondaryColor="${Blue}"
promptSymbol="${Green}$ "
fi
userhost="${PrimaryColor}$(whoami)@$(hostname -s) "
currentdir="${SecondaryColor}[$(pwd | sed "s!^$HOME!~!")] "
currentTime="${PrimaryColor}$(date +%H:%M:%S) "
PS1="$Reset$White"
PS1+="$userhost"
PS1+="$currentdir"
PS1+="$currentTime"
PS1+="$promptSymbol"
PS1+="$Reset"
}
PROMPT_COMMAND='set_prompt'
################Custom Prompt End###############
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