Hi ! I think I can help you with the brown, blue and green eggs. (Pink is a new one to me)
Normally my 12 yr. old son is the chicken expert, but I can speak from what I know.
For brown, if you like the really dark brown (like the color of milk chocolate), go with Marans
If you like the light brown eggs (you can try the Golden Comets/Red-Sex Linked/Cinnamon Queen, they have all sorts of names)
And blue eggs come from Ameraucanas or Araucanas
I did have a standard size Ameraucana that laid kind of olive green eggs.
There are other colors like cream (some are peachier cream, others more off white).
And always the white ones.
Well, good luck. That's all the info I have to offer.
Thanks,
p.s. check out our website if you want to see some pics of the eggs, under some of the breeds (Marans, Ameraucana)