Einion, what I am going to try to say is a little tricky to understand through a screen. Wish me luck
You see, normally regardless of hair color, the male face develop a greyish veil in the bottom face at first hours after shaving.
For example here is well known actor Brad Pitt. Check his "five o'clock shading". As you are noticing it is not a "blond veil", let's say this way, but a greyish tone developing in the bottom face.
Well
I can suggest too to dig for color photographs of famous blonde guys. Let's say Paul Newman, James Dean, James Hunt and so on ...
But, as this can be a surprise at first glance, may I just say that is not so much that as it first seams. Let's think what color do we normally associate a jarhead guy
As a matter of fact, it doesn't even have to be a guy. Here is well known actress Cameron Diaz shortly after her famous scene in the movie "
My Sister's Keeper":
And look what shade her head developed
Hope it helps.