at moesan
read the internet, there is only one way your eye colour is as you stated compared to your parents
as i stated, Directly from your parents and NOT your ancestors
Maybe I didn't understand what you are trying to explain?
YOur direct parents, dad and mum, passed to you the half of their own parents, so an ancestral heritage. If you try to say that the genetic basis of your eyes colour is the result of what every parent gave to you, you are right. Evidently we cannot keep all the genes of our grand-parents (mitose)! Our eye colour, AT FIRST SIGHT, isn't a combination of all the ancestral genes
dedicated to eye colour, sure. But our parents didn't created their genetic supports out of the air!
and the eye colour is not always the result of only a pair of biallelic elements; others pairs can come in play, which complicate sometimes the result.
I know the autosomeDNA is a more complete reflect of on whole ancestry, when our eyes colour is based on a narrow selection of some diverses possibilities; but it's the case of a lot of simple traits.
In short, I know my grand-parents and my earlier ancestors didn't come to give me their genes to be sure I should not loose one of them !