sudo in terminal

["H. Crissman" <hcrissman@xxxxxxxxxxxxxxx>]

When I "vi example.file" the text inside the file is color coded based 
on format (ie. commented out lines are blue). But when I "sudo vi 
example.file" that color coding is lost. How can I enable that when I 
edit a file using sudo? It really helps when you are looking at a long 
config file.

Thanks,

H. Crissman