Jim Like I said it just dosen't matter to me or the fish. If I can get a good buy on a natural that is fine if I get a better buy on the dyed I would take that. Yes I have many natural dun capes and yes they are real pretty but the fish sure don't care and that is what counts in my book.
I should also add that I use saddles for 90 percent of my tying. Saves time and I get a lot more hackle per size off of one saddle compared to capes. I buy the saddles to size for what I need them for. I have saddles from size #6's to size #24's in several colors and several of each saddle size. I like them because I do not have to pick up hackle pliers until I am on the last fly the saddle will tie. That saves lots of time.
There isn't many materials used for fly tying that are prettier than a beautiful natural cape. But that does not mean there isn't something that is better to use. Or that a dyed color will not work just as well on the fish. Ron