Jul 18, - Semen is normally a whitish-gray color. Changes in semen color might be temporary and harmless or a sign of an underlying condition that Missing: properties | Must include: properties. Semen, also known as seminal fluid, is an organic fluid that may contain spermatozoa. .. In some cultures, semen is considered to have special properties associated with masculinity. Several tribes of Papua New Guinea, including the Sambia Missing: black | Must include: black.