There are two Ulster Tartans listed on the Scottish Tartans Museum's Irish tartans page, the Ulster & the Ulster Red -- the former is a "weathered" tartan, to simulate the colours when the original piece was pulled out of the bog in the 1960's.

Just keep scrolling down, and you'll see it:

http://www.scottishtartans.org/Irish.htm

I prefer the Ulster Red myself, although I do like the County Cork, Wexford, Westmeath, and Mayo Tartans as well! :mrgreen:

Cheers,

Todd