Is the color of Rudraksha different in water? How does the color of rudraksha change in water?  

The color of rudraksha beads does not alter when they are wet. The stiff, woody seeds of the Rudraksha tree are used to make rudraksha beads. These beads are well known for being long-lasting and resistant to water.  
The color of rudraksha beads does not alter when they are wet. Beads made of rudraksha are known for their resilience to water. They are made from the hard, woody seeds of the rudraksha tree.  

What colors are rudrakshas available in?  
When exposed to water, the hue of rudraksha beads does not dramatically alter; they are usually dark or black in appearance.  
Rudraksha beads come in a variety of colors, from light brown to dark brown to black. The most popular colors of rudraksha beads are as follows:  
Brown: Its color might vary from a light brown to a dark brown. The majority of Rudraksha beads that are sold are brown in color.  
Black: Some Rudraksha beads are inherently black or have a deep brown tint. Because these black Rudraksha beads are relatively more rare, some people think highly of them.  
It's important to keep in mind that many fake or artificially colored Rudraksha beads are available for purchase. These beads may begin to fade or lose color when exposed to water or other external factors. To ensure the validity and quality of your Rudraksha beads, it is therefore recommended that you purchase them from reliable vendors. Natural Rudraksha beads are often dark or black in color, thus they shouldn't change color too much in the presence of water.  
Lastly, the natural color of rudraksha beads—which is typically black or brown—does not alter when they come into touch with water. Genuine Rudraksha beads endure dampness and keep their beauty and characteristics throughout time.