BeginBeginner's Fly Tying Series: Easy Atlantic Salmon Patterns - the Purple Ratner's Fly Tying Series: Easy Atlantic Salmon Patterns - the Claret Killer

The Purple Rat is a Newfoundland derivative of the Rat series of flies that originated in New Brunswick. Purple is also a great colour for steelhead, so I can't see why this shouldn't be used for those fish as well.