The word brown is recorded only four times in the King James Old Testament. These occurrences, all of which are in Genesis 30, come from the Hebrew word chum (Strong's #H2345). The word means, "be warm," sunburnt or swarthy (blackish).
The color of prosperity
Finally, in 1709 B.C., Jacob had fulfilled his promise to work for Laban 14 years for the right to marry his daughters Leah and Rachel. During this fruitful period, he had produced eleven sons and one daughter. It was now time, at age 91, for him to leave his father-in-law and return to Canaan (Genesis 30:25 - 26).
Laban, however, who was a selfish but shrewd relative, knew that God had blessed him for Jacob's sake. Feigning generosity, he offers to pay him anything he wants in order to continue being his chief shepherd. Jacob responds with his own proposal that seems, on the surface, quite risky for him but a sure moneymaker for Laban.
Jacob proposes a simple and honest method of payment for his services. All the speckled and spotted cattle and goats, as well as the brown sheep, born to Laban's herd would become Jacob's property. These types of animals were generally quite rare. Any newborn animals who did not look this way would belong to Laban.
Laban agrees to the deal but then selfishly seeks to make it even harder for his son-in-law to become wealthy! He separates all the speckled, spotted and brown animals into their own herd and has his sons take them a significant distance away from Jacob. This means only the most common colored beasts are left to be herded.
Jacob, who continues to be blessed by God, is still able to produce a huge herd of speckled, spotted and brown animals (Genesis 30:43). He also manages to keep the strongest beasts for himself while the weaker ones become the property of Laban. He leaves for Canaan six years later a much wealthier man who thwarted a relative’s attempts to cheat him!
Hidden appearances of brown
Chalcedony stones (Revelation 21:19) are one of the many gemstones found in the Bible. The most common colors found within this type of precious gems are white, gray, reddish or light brown, green and blue.
Jacinth (hyacinth) gems were used in the High Priest's breastplate (Exodus 28:19) and will be utilized in the New Jerusalem soon to be built by God (Revelation 21:20). These stones can manifest colors from yellow to brown.
Jaspers are considered an opaque variety of Chalcedony stones. They were used both in the High Priest's breastplate (Exodus 28:20) and were one of the gems God's used to decorate Lucifer upon his creation (Ezekiel 28:13). These stones are capable of displaying red, green, brown or yellow and they can appear flamed or striped.
Added info on Biblical meaning of brown
Traditionally, one of the challenges of Biblical translators is trying to determine what color is being referenced in the original language text.
"There are but few real color terms found in Biblical or traditional literature. Only white, and . . . red and green, are distinguished by name; while for blue and yellow distinct terms are entirely wanting . . . " (1906 Jewish Encyclopedia).
For example, in the King James Bible the word brown appears four times (all within Genesis 30). In the Contemporary English Version, however, it shows up five times (all of which are not in Genesis 30)! The Living Bible has it showing up only once (1Peter 1:24). Many translations, such as the NASB, ASV, RV and others, do not have it recorded at all.