I believe the tables were covered with the typical green felt for card playing, but I haven't made a study of it.
"If only they had colour photos back then..."
Oh, they did. Through a tricky and time-consuming method. A tripod-mounted camera was locked down securely, and three exposures were made on B&W film (glass plates), each with a different-colored filter in front of the lens -- deep red, deep blue and deep yellow. The resulting three images could then be transferred to three printing plates, and each of these plates printed over each other using their respective colored inks.
This was done fairly often back then for color magazine covers, art prints, advertisements, still lives and such, so long as there was no movement during the laborious three-step process.
An spectacular series of full-color photos, done in this manner, was taken inside one of the c.1900 German liners, and post cards were printed (see Jack Shaum's book "Majesty At Sea"). This was years before
Olympic and Titanic.
You never know... One day a similar series of B&W glass plates may turn up for
Olympic or Titanic. New things continue to be discovered for these ships. It won't end in our lifetimes.
Ken