NO your lucky to have the ameraucana's and araucana's if they are true breeds! They are hard to find and misrepresented often for sale at hatcheries!!
The japanese bantam gives pink eggs~ they are super cute!!
Are your araucana's rumpless?
olive green is tricky. From what i gather you have to breed an blue egg chicken with a brown egg one. I am sure there are genetic factors and such. I am dying to do it!! Yes, ee's give you a range which makes them super cool in my book! I only have ameraucana's but might breed my roo with an BR...
LOL, that's cute! They do it on their own~ Sometimes pink, sometimes blue or even green. But that would be an EE not an ameraucana. Ameraucana's only lay blue eggs! Post a pic and we will tell you what eggs you'll get by the type of bird you really have.