On the same bush you can have both off white and yellow blooms. (Photos 14/5/24)
Google translation of the 2000 reference:
"‘Cream Gold’ = Miniature… fine pointed buds… small flowers with slender centers, yellow containing more or less gold or cream depending on the climate, to the point of sometimes being more off-white than yellow. Made up of at least 40 petals, they are often fragrant – here again, the climate influences… compact bush with a spreading habit. Moore, US, 1978."