I've been fishing this RS2 pattern for the better part of a decade. Possibly longer. This pattern is very similar to that of Rim Chung's RS2. (Maker and creator of the RS1 and RS2). He dubs the whole body on his but I found this pattern to be just as effective. It's a quicker tie and just deadly. I have never changed the thread color. Just the thorax. It's either olive or adams gray. If you are a lover of small flies for picky trout or just a lover of small flies, this pattern is for you. It's deadly. Try it out. I think you will be pleased with the outcome.