Colorado King, Brown
Hook - Mustad R50
Thread - Brown
Tail - Two dark moose body hairs or moose mane, tied split
Hackle - Brown tied palmer-style over the body
Body - Dubbed with brown synthetic fur
Wing - Dark elk hair tied over the body
Colorado King, Dark
Hook - Mustad R50
Thread: Black
Tail - Two dark moose body hairs or moose mane, tied split
Hackle - Grizzly tied palmer-style over the body
Body - Dubbed with muskrat fur
Wing - Dark elk hair tied over the body
Colorado King, Female
Hook - Mustad R50
Thread: Black
Tail - Two dark moose body hairs or moose mane, tied split
Hackle - Grizzly tied palmer-style over the body
Egg sac – Yellow dubbing
Body - Dubbed with muskrat fur
Wing - Dark elk hair tied over the body
Colorado King, Light
Hook - Mustad R50
Thread - Gray or black
Tail - Two dark moose body hairs or moose mane, tied split
Hackle - Grizzly tied palmer-style over the body
Body - Dubbed with yellow synthetic fur
Wing - Light elk hair tied over the body
Tie these in different colors to represent the caddis and stoneflies in your area
If you feel the need to reinforce the hackle with wire, then do so on your flies
Designed in 1971 by George Bodmer of Colorado Springs, Colorado
Reference
Western Trout Fly Tying Manual - Volume II - Jack Dennis
Fish Flies - Volume One - Terry Hellekson