I also want a Solid Black Tartan for Clergy or solid colors are something I wondered about as a plaid is sometimes difficult to make and sometimes hard to distinguish, a Solid Color would be easier and I think the Kakhi

Great Article From MAtt's article with exception of this statement:
"Keep in mind that until the Reformation of the sixteenth century, all of Scotland was Catholic" The Orthodox Churchs have been there 1600 years or so.

This is absurd there are and were many other religions at that time and Now.
Here is Matt's previous article that refutes the claim that Scotland was ever all catholic
http://www.albanach.org/shorthist.html