In my "Limited" experience, fresh cut live standing trees have a pinkish or red hue. I gauge how long the Ash tree has been dead by the amount of pink showing. I don't know if that's a valid assumption or not. I love the grain and white color of live Ash and I just don't want some bleached out gray looking blanks.No pink, but did have ants in the butt log. I'm cutting around that. I don't think I've see ash with pink in it before. Most everything I've milled looks like what I'm using. I did mill one tree that was kind of on the redish side, wierd, looked like red oak. Back when the ash borers hit her they where taking down trees that still had some leaves, but the upper canopy was dying off. It was really a shame to see all these ash trees get cut down and just chipped. I grabbed what I could. What I have left now is the last of it, all 8/4" My utility trailer walls are 1" ash.
I like completely white colored Ash lumber. None of the brownish centered lumber. Someone told me (someone from here?) that when ash logs/lumber has the brownish center/pith, the tree is in the process of dying. Don't know if that's true or not either.