thanks for the info, I have had light light cream eggs and as soon as I sand them down they turn white, I have yet to have in my hands a pinkish egg, seems like a separate gene and not a shade of brown
My Partridge Silkie and Black Silkie eggs are the same color inside and outside in a creamy pink. The Partridge eggs are
matte outside and more on the
creamy light pink side and the Black Silkie's eggs are
glossy outside on the
pink side yet both are creamy pale pink inside. (Say THAT fast 3x LOL) We figure the glossier exterior Black Silkie egg just looks pinker than the matte Partridge egg because the glossier egg catches the light and shows up the pink color better.
My APA Blue Wheaton Ameraucana matte blue eggs are light blue outside and very pale bluish inside. I wish they were glossy to show the color prettier but don't know what breed characteristic Ameraucanas have for matte or gloss eggs. The SOP just says distinctive blue eggshells and nothing about matte or glossy.
My Buff Leghorn (from Danne Honour strain offspring through a different breeder) are pink outside and very pastel pinkish inside.
Since none of our eggs have white interiors I only got paler shades of pink or blue when sanding but never a "white". Now the White Leg we once had we nick-named her eggs Snow Whites because they were the whitest white inside as well as outside. She layed gorgeous snowy eggs. We always noticed that the Silkie interior eggs were never white like the White Leg's eggs. We no longer have her to compare interior shells with our newer breeds.
We sanded more of our egg shells (Silkie, Ameraucana, Buff Leg) with fine fingernail sandpaper and all kept their color without going "white" but just paler shades of pink or blue. As the shell sanded thinner daylight made the color look lighter so if you aren't paying attention your eyes
assume it is getting whiter - and none of the eggs have smears, speckles, or streaks but are all perfectly even colors all around. I never could say that about the Cuckoo Marans eggs that often were removed from the nest either speckled, smeared or streaked when wet and otherwise color removed easily - can't check the inside of the shells for you now as we no longer have the Marans. If we had to remove poop from her egg color would smear whereas we don't have that problem with Silkie, Ameraucana, or Buff Leg eggs.
Other than the Marans we have never had a "brown" egg layer so can't comment on "brown: for you other than the exterior Marans eggs - her eggs were definitely whitish inside but never really noticed beyond that except that we were disappointed in her as a chocolate layer - she barely made #4 on the egg color charts and her eggs came out golf-ball round instead of tapered. She was re-homed. Apparently breeders have inconsistent color depth with all dark layers like Marans, Welsummers, Penes, and Empordanesas so we stay away from dark layers now. Sometimes I think the photos of dark eggs on the internet can't be trusted as my camera makes my blue Ameraucana eggs look much bluer than they actually are yet my camera makes the pink eggs come out looking lighter. Can't trust photos which is why I rarely post them re: colors.
On one more
note: we haven't noticed our pink or blue eggs get any lighter in color as the laying season progresses. I'm not sure how much you are familiar with Silkies or Ameraucanas (not EE) but they are prolific layers on a par with Leghorns like 5-6 eggs/week so these breeds keeping even color impresses us. The only deterrent being that Silkies can go broody after 3 or 4 months' laying so don't lay straight through a season like an Ameraucana or Leghorn.
Hope this wordy post helps and thanks for the education! Beware asking me questions as I'm a retired researcher by profession and tend to anticipate potential details LOL. I hoped as a breeder you'll appreciate the details - know that I appreciate your info as well.
