Here is an article I wrote in Sept. 2005 on the Clergy tartan:
http://albanach.org/clergy_tartan.htm

I've made several Clergy tartan kilts in the past. Here's one I made being worn by a Benedictine priest, taken while on vacation to visit his family's homeland (Nova Scotia).



Here is a close-up of another Clergy tartan kilt I made, this one for a Presbyterian minister.


In both cases the tartan is in the modern colors, Lochcarron heavy weight. Often the Clergy tartan is seen in the ancient colors, and there is also a green version. I've done kilts in all three. I'd have to say that the modern colors are my favorite, but the ancient seems most popular today.