Hi Nigel!
Thanks for the compliment on the photo!
And to answer your question, yes my great grandfather of 98 travelled First Class on the Olympic in 1933.
To answer Dan K's question, I based my photo somewhat on his description of his cabin, which was similar if not identical to the one shown, and the rest I based on gray scale color matching I use when working with converting color to gray and gray to color, this seemed to be the best matching layout based on my method.
Best Regards,
Brian