Rest easy, Dave. I think he was referring to BULK CEMENT on the IVORY livery with the black CIE logo. There is only one photo that I'm aware of showing that. In the grey livery, BULK CEMENT branding was all over the wagons as you rightly point out. Wonder how it made it onto the ivory on so few wagons?
A number of them look a little darker through the rake. Lighting, cloud cover, older more weathered wagons, even some in orange depending when the photo was taken (although I suspect not)