The photo in Botanica's Roses depicts something the same color as the link I posted. I wonder if most of the roses pictured at HMF are from common stock or are grown under similar conditions?
It's curious: The yellows in Juliet and Young Quinn, both, have not developed as they do in a few other places where roses are grown. And even the yellow in climbing Sun Flare looked a little more pale to me than I expected, though I've seen Sun Flare fade a bit more, I think. In Juliet, this pallor made the rose distinctly prettier and less garish. But somehow it makes YQ look a little anemic.