Indeed, semen color, texture and even smell can provide us with a lot of information about your fertility and health. After ejaculation, we can observe the semen's color, texture, consistency, and smell, and get information on our fertility to some extent.
The color of healthy sperm is normally white or light gray. If it ranges from yellow to even green, you may have a prostate infection and should speak to your medical provider as soon as possible to determine if there is an infection causing your sperm to be non-fertile. In this case, antibiotics may be required.
Yellow can also indicate the presence of urine in the semen. If the color of your semen is pink or reddish-brown, it may be an indication of an inflammation of your prostate and that color is caused by bleeding.
As for the texture/consistency, semen is normally thick after ejaculation. If it changes into a sticky texture, it is likely that a medical condition is present.