Question: What color table did Gachet rest his elbow on in Van Gogh's painting?
About the article "Portrait of Dr. Gachet", section "Composition".

Candidate passages:
Gachet and his daughter were both subjects for Van Gogh's paintings. 
In 1890, Van Gogh's brother Theo was searching for a home for the artist upon his release from an asylum at Saint-Rémy.
Upon the recommendation of Camille Pissarro, a former patient of the doctor who told Theo of Gachet's interests in working with artists, Theo sent Vincent to Gachet's second home in Auvers.
Vincent van Gogh's first impression of Gachet was unfavorable.
Writing to Theo he remarked:"I think that we must not count on Dr. Gachet at all.
First of all, he is sicker than I am, I think, or shall we say just as much, so that's that.
Now when one blind man leads another blind man, don't they both fall into the ditch?
"However, in a letter dated two days later to their sister Wilhelmina, he relayed, "I have found a true friend in Dr. Gachet, something like another brother, so much do we resemble each other physically and also mentally."
Van Gogh's thoughts returned several times to the painting by Eugène Delacroix of Torquato Tasso in the madhouse.
After a visit with Paul Gauguin to Montpellier to see Alfred Bruyas's collection in the Musée Fabre, Van Gogh wrote to Theo, asking if he could find a copy of the lithograph after the painting.
Three and a half months earlier, he had been thinking of the painting as an example of the sort of portraits he wanted to paint: "But it would be more in harmony with what Eugène Delacroix attempted and brought off in his "Tasso in Prison", and many other pictures, representing a real man.
Ah!
portraiture, portraiture with the thought, the soul of the model in it, that is what I think must come.
"Van Gogh wrote to his brother in 1890 about the painting: 
Vincent's brother, Theo van Gogh, thought that Gachet's background and sensitivity toward artists would make him an ideal doctor for Vincent during his recovery.
Very soon after he began seeing Gachet, however, Vincent began to doubt the doctor's usefulness.
Vincent described Gachet as: Gachet has come in for much criticism over the years regarding Van Gogh's suicide after ten weeks of consultation.
However Van Gogh was either unable or unwilling to follow his doctors' advice to cut back on alcohol and smoking.
According to Arnold, "there was not much else available to any physician of the day which could have reversed the course of Vincent's illness."
And he summarizes the medical treatment that Van Gogh received from his various doctors thus: "The overall assessment is rather that they did as well as expected with an unfamiliar disease and a difficult patient."
Van Gogh is a 1991 film written and directed by Maurice Pialat.
It stars Jacques Dutronc in the role of Dutch painter Vincent van Gogh, for which he won the 1992 César Award for Best Actor.
Set in 1890, the film follows the last 67 days of Van Gogh's life and explores his relationships with his brother Theo, his physician Paul Gachet (most famous as the subject of Van Gogh's painting, "Portrait of Dr. Gachet"), and the women in his life, including Gachet's daughter, Marguerite.
The film was entered into the 1991 Cannes Film Festival. 
The pastoral Auvers-sur-Oise region of hills, fields, gardens and cottages attracted artists to it and the surrounding area.
Starting in 1850 a railroad line facilitated travel from Auvers from Paris.
Artists who came to the area to paint included the Impressionists Armand Guillaumin, Camille Pissarro and Paul Cézanne.
In May 1890 Van Gogh left Saint-Rémy for Auvers where it provided a quieter life than that of Paris, but was still near his brother Theo for visits.
In Auvers he was under the care of Paul Gachet, a homeopathic physician, who advised Van Gogh to not worry about his illness and focus on his painting.
Gachet, an amateur painter, became a good friend.
To Theo he described Gachet as "something like another brother.
"In Van Gogh's first letter to his brother from Auvers he wrote, "It is profoundly beautiful, it is the real country, characteristic and picturesque."