Griffith
With the streak of a tear, Like morning dew
Lord Leith said:You're taking it too literally lol, obviously Guts isn't dressed like he was in the Golden Age or exactly the same, its more so that physically all the key signifiers of post eclipse Guts are absent (i.e. his eyes aren't shown, the white streak is absent, his scars and metal arm are hidden) in the mind's eye of Casca since thats how she last remembers him (which is why I said her perspective from afar, we as readers obviously know he's not the same), difference of armour/clothing notwithstanding.
I think he was taking that theory to its illogical extreme to point out its a reach to say that's why the white hair isn't visible. Guts is being de-emphasized and obscured for a number of reasons including how different he'll look up close, but making it about and focusing on the hair is little silly.
Anyways, this still doesn't explain the cover, care to explain that?
The cover must be from Casca's deluded point of view!