A WORKING RETREAT THAT'S USER-FRIENDLY
LEAD: HERE in a quiet spot in Colorado unheralded by ski brochures or John Denver sits a little cabin on a hill surrounded by pinon and Ponderosa pine. Unpretentious, like its occupants, the simple, copper-roofed structure draws its architectural inspiration from a variety of sources: rickety windswept ghost towns, tacky log-cabin motel courts, early 20th-century Sears, Roebuck &

