Here are the standards for an Americauna. Any variance falls into EE, from what I have read.
{eyes - bay (reddish brown)}
{shanks & feet - slate (blue grey) black accepted on black birds, bottoms of feet white}
{ear lobes - red, pale on females (no white)}
{comb - pea}
{wattles - very small, absent}
{skin - white}
{toes - four}
{muffs & beard - forming three separate lobes, absence is a DQ}
{egg color - blue, minty green}
{cock weight - 6.5 lbs/cockerel - 5.5 lbs}
{hen weight - 5.5 lbs/pullet - 4.5 lbs}
{full breast, medium back, and tail carried at 45 degrees above horizontal}
{the bird must breed true to color}