A Crystal verison because ... why not? :P

seeyouspacecowboy.cr

# Crystal fork of "SEE YOU SPACE COWBOY by DANIEL REHN (danielrehn.com)"
# by @ethagnawl
# Displays a timeless message in your terminal with cosmic color effects

# Usage:
# - build with `crystal build -o ~/seeyouspacecowboy seeyouspacecowboy.cr`
# - add `~/seeyouspacecowboy; sleep 2` to ~/.bash_logout
# (adjust the sleep variable to display the message for more seconds)

class String
  def colorize(color_code)
    "\e[#{color_code}m#{self}\e[0m"
  end
end

puts "  .d8888b.  8888888888 8888888888      Y88b   d88P  .d88888b.  888     888 ".colorize("38;5;160;01")
puts " d88P  Y88b 888        888              Y88b d88P  d88P' 'Y88b 888     888 ".colorize("38;5;196;01")
puts "  'Y888b.   8888888    8888888            Y888P    888     888 888     888 ".colorize("38;5;202;01")
puts "     'Y88b. 888        888                 888     888     888 888     888 ".colorize("38;5;208;01")
puts "       '888 888        888                 888     888     888 888     888 ".colorize("38;5;214;01")
puts " Y88b  d88P 888        888                 888     Y88b. .d88P Y88b. .d88P ".colorize("38;5;220;01")
puts "  'Y8888P'  8888888888 8888888888          888      'Y88888P'   'Y88888P'  ".colorize("38;5;226;01")
puts "  .d8888b.  8888888b.     d8888  .d8888b.  8888888888                      ".colorize("38;5;190;01")
puts " d88P  Y88b 888   Y88b   d88888 d88P  Y88b 888                             ".colorize("38;5;154;01")
puts "  'Y888b.   888   d88P d88P 888 888        8888888                         ".colorize("38;5;118;01")
puts "     'Y88b. 8888888P' d88P  888 888        888                             ".colorize("38;5;046;01")
puts "       '888 888      d88P   888 888    888 888                             ".colorize("38;5;047;01")
puts " Y88b  d88P 888     d8888888888 Y88b  d88P 888                             ".colorize("38;5;048;01")
puts "  'Y8888P'  888    d88P     888  'Y8888P'  8888888888                      ".colorize("38;5;049;01")
puts "  .d8888b.   .d88888b.  888       888 888888b.    .d88888b. Y88b   d88P    ".colorize("38;5;051;01")
puts " d88P  Y88b d88P' 'Y88b 888   o   888 888  '88b  d88P' 'Y88b Y88b d88P     ".colorize("38;5;039;01")
puts " 888        888     888 888 d888b 888 8888888K.  888     888   Y888P       ".colorize("38;5;027;01")
puts " 888        888     888 888d88888b888 888  'Y88b 888     888    888        ".colorize("38;5;021;01")
puts " 888    888 888     888 88888P Y88888 888    888 888     888    888        ".colorize("38;5;021;01")
puts " Y88b  d88P Y88b. .d88P 8888P   Y8888 888   d88P Y88b. .d88P    888        ".colorize("38;5;057;01")
puts "  'Y8888P'   'Y88888P'  888P     Y888 8888888P'   'Y88888P'     888        ".colorize("38;5;093;01")