Republican Wildcat is correct. It flipped between '80 and '84. Check his post #14. In '96 they were already showing dems blue, Pubs red.
Blue was used for the party holding the White House and red for the challenger.
Garde la Foi, mes amis! Nous nous sommes les sauveurs de la République! Maintenant et Toujours!
(Keep the Faith, my friends! We are the saviors of the Republic! Now and Forever!)
LonePalm, le Républicain du verre cassé (The Broken Glass Republican)
http://www.youtube.com/watch?v=-52n_qaL6BE 1988 - Dem Blue, GOP Red
http://www.youtube.com/watch?v=5IxGjLb2rqM 1992 - Dem Blue, GOP Red
I found one video from 1972 it showed Nixon’s states as blue. Could not find any from any other years.