I love natural looking Olive spey patterns like the Olive Garden, so here's one of my own. Tag - Gold Wire / Tail - Ringneck Pheasant Neck Feather / Body - Olive / Rib - Pearl Mylar and Twisted Gold Wire / Hackle - Extra Select Ringneck Rump / Collars - Long Lemon Woodduck, Olive Barred Mallard and Natural Guinea all sparse / Wing - Peacock.
Nice tie Nick and ditto to what Monkey Salad hinted at. When tying ACS flies or regular spey flies, burnish the tag by using the back of your fingernail to "polish" the tinsel. This will achieve two things, flattening the diameter of the tinsel and achieve that more "painted on" look.