The phrase 'differ in color' is correct and usable in written English.
It can be used when describing the differences between two or more items with regards to their color. For example, "The two vases differ in color, with one being green and the other being brown."
On the WCST, subjects are asked to sort into two different piles a series of cards with figures that can differ in color, shape, and/or number.
Females did not differ in color pattern across sites, but males were more mottled (feminized coloration) in agricultural areas, and we did not observe the typical sexual dimorphism in mottling at the most agriculture site most toads were mottled.
How does it differ in color and black-and-white?
Asphaltenes and resins differ in color and texture.
Plenty of animals, like birds and other insects, lay eggs that differ in color based on what their parents eat or other factors, but scientists have never observed mothers intentionally changing the color of their eggs.
These marbles differ in color, texture and pattern depending on their stratigraphical levels and are well known in the international trade as the Mugla Black (Permo-Carbonifereous), Mugla White (Cretaceous), Milas Lemon, Lilac, Aubergine, Pearl, Veined and White (Triassic) and Aegean Bordeaux (Paleogene) marbles.
After UV-C irradiation, some colonies appeared with phenotypic characteristics that differed in color and size from the control colonies.
We introduced 15- and 17-month-olds to a novel noun, presented in conjunction with pictures of two whisks that differed in color (one purple, one orange).
Instead, their interpretation was sufficiently abstract to include a new member of the same object category, although it differed in color and representational medium (a real silver whisk).
Children were shown one of two otherwise identical objects, which only differed in color and asked, "Can you get me the chromium tray, not the red one, the chromium one" (recited in Carey 2010: 2).
It came in an inestimable number of varieties that differed in color, texture, size and prestige, and was eaten as corn tortillas, tamales or ātōlli, maize gruel.
