.pryrc

# Add color coding based on Rails environment for safety
# edited by cveneziani 

if defined? Rails
  banner = if Rails.env.production? || Rails.env.staging?
    "\e[41;97;1m #{Rails.env} \e[0m "
  else
    "\e[42;97;1m #{Rails.env} \e[0m "
  end

  Pry.config.prompt_name = banner
end

Sam same, I didn't know about pry prompts. I discovered the prompt_name while investigating the stack level too deep 😃