Colored prompt for bash

.bashrc

reset_color="\[\033[00m\]"
color_code=$(( 104 + (16#$(hostname | md5sum | cut -c 10) % 127) ))
host_color="\[\033[38;05;${color_code}m\]"

user_color="\[\033[1;32m\]"
path_color="\[\033[1;33m\]"
prompt_sign="\$"
if [ ${UID} -eq 0 ]; then
  user_color="\[\033[1;31m\]"
  path_color="\[\033[1;31m\]"
  prompt_sign="\#"
fi

PS1=$(echo -ne "[$user_color\u$reset_color@$host_color\h$reset_color $path_color\w$reset_color]$prompt_sign ")

.zshrc

root_color=$'%{\e[1;31m%}'
user_color=$'%{\e[1;32m%}'
path_color=$'%{\e[1;33m%}'
fg_normal=$'%{\e[033;0m%}'
host_color_code=$(( 104 + (16#$(hostname | md5sum | cut -c 8 ) % 127) ))
host_color=$(echo -e "%{\e[38;05;${host_color_code}m%}")

PS1="[%(!.$root_color.$user_color)%n$fg_normal@$host_color%m$fg_normal %(!,$root_color,$path_color)%~$fg_normal%\]%(!,#,%%) "