There are several synonyms that can be used in place of the phrase "more snuff-colored." One alternative is "darker brown," which suggests a deep, rich hue. Another possible synonym is "coffee-colored," which describes a warm, earthy shade reminiscent of freshly brewed java. Additionally, "chestnut-colored" can be used to describe a brown color that has hints of red or orange, resembling the color of a chestnut tree. "Mocha-colored" can also be used to describe a rich brown color that is similar to the shade of a freshly poured cup of mocha. Whether you choose to use "darker brown," "coffee-colored," "chestnut-colored," or "mocha-colored," each synonym can help to add depth and nuance to your writing.