Stimulator Orange. We all know how fruitful a colour orange can be. The Orange Stimulator is no exception. A ruggedly hackled searching dry fly that doubles as a tempting sight indication. I don't know how many times I have tied one of these on a slower day to experience and immediate rod slamming take. make sure that you keep a wide variety of colours and sizes on you patch at all time, the Orange Stimulator is one pattern you won't want to be without.