Alas! I did not paint that. I was just retouching a small, flaking area of pigment.
The images where the cuffs are all the way down and buttoned, are really meant to be illustrative of the shirt, itself, and how it feels. Also I should mention that I purposefully disregard my own sizing suggestion and wear the longest of our sleeve lengths (36.75"):
A. Because I personally prefer the extra length for the comfort it affords
B. In order to highlight the shape of our sleeve pattern a bit more.
That being said, the visual effect of the added sleeve length is entirely lost under a jacket or sweater sleeve.
In the event that I'm not wearing a jacket, I generally will have my sleeves rolled up, folded over twice (not always, though). Another matter of personal preference.
I'll be sure to post some more images of how the shirt looks with the sleeves rolled up, as well. In case you need a more precise frame of reference, my biometrics are on each product page (I'm model B).