How's this - KG's Spring Creek Scud:

Hook: DaiRiki 125 sizes 16-12

Thread: 6/0 Uni - olive

Tail: AZSimi-Seal, olive-amber blend

Shellback: Plastic bag material

Rib: Pearl Krystal Flash

Body: AZ Simi Seal olive/amber

dubbing, picked out and trimmed

I tie it in olive and amber or a blend of the two. I think there is a Fly of the Week archived here somewhere with a step-by-step.