Hi,
I was reading about
what affects yolk color.
Foods That Naturally Influence Egg Yolk Color
Yolk Color: Ingredient
nearly colorless: white cornmeal
pale yolks: wheat, barley
medium yellow yolks: yellow cornmeal, alfalfa meal
deep yellow yolks: marigold petals, kale, greens
orange to red yolks: carrots, tomatoes, red peppers
Have you tried switching them to carrots? Same effect (though to what extent) and less costly ingredient.
There is a custom blending spice company in Waukegan. I saw online bulk sales of 25- and 50-pound bag of chiles.
You could grow, dry and grind your own chili powder, too.
Regards,
Cathy2