.bashrc is not working with root user, but you can use ~/.bash_profile instead.

#
# ~/.bash_profile
#

# If not running interactively, don't do anything
[[ $- != *i* ]] && return
echo "Hello Root"

alias ls='ls --color=always'
alias ll='ls -al --color=always'
PS1='[\u@\h \W]\$ '

The only problem is that .bash_profile will not be executed when you login using ssh.