As sure as I can be short of direct confirmation from whomever supplies the material to Alden.
The swatch pictured at the posted link does not look much like what Alden calls "Kudu" - I have a pair.
Nor does my pair look like actual Kudu shoes that I have seen.
Finally, the Alden sales rep from whom I purchased my pair pretty much acknowledged that they were not actual antelope hide, but rather processed to give that effect.
And none of this is to knock the Alden material itself - I think it is a fantastic choice for a hard working boot as it is damned near indestructible and requires no care beyond the occasional wipe down with a damp cloth. I kind of wish I had chosen a taller boot instead of a chukka for my pair.
Anyway, enough about Alden - are you guys tired of Burnham pics yet?
My earlier photos were taken in the early morning where the sunrise may have contributed to some enhanced redness in the pics. So I tried again in early evening - well before sunset - to see if more neutral ambient lighting might yield different results.
Nope. Still a lovely red undertone to this shade.
How about wearing them in one of your signature fit pics?