help to match the chicken to the egg

[Dolivo]

hi, I've got Easter eggers and 5 different brown egg laying breeds. I've gotten eggs that range from dark brown to do light tan they almost look pinkish white. I even get an egg that looks almost light purplish mauve. I was hoping I could get some opinions on who is laying which eggs. the only one I know for certain is that the light green eggs are coming from one of my ee's. my breeds are:
black ostrolopes
Amber Whites
Rhode Island Reds
new Hampshire Reds
silver laced wyandottes

here are some pics

 

[snywalker]

One thing you can do is put food coloring on the vent. (Not the watery stuff) Don't use red because they peck at red. But the eggs should end up with colored stripes and you can tell what egg she layed.