First of all, there is  absolutely no problem with your sperm color.

In the other hand, the condition in which ejaculation happens quickly is known as premature ejaculation. It is a lack of control over ejaculation control, with a short time between starting intercourse and ejaculation (less than 1 to 2 min) despite a normal sexual activity frequency, associated with couple's dissatisfaction.

Though there is no organic cause that can explain premature ejaculation, its correct mechanism is not yet known. It could be related to genetic predisposition, penile hypersensitivity or psychogenic factors.

Before moving to drug therapy, one can benefit from some behavioral treatment. This must rely on the cooperation of both partners. It is somewhat time consuming. Decrease foreplay, switching positions (allowing some rest) and adoption of less stressful positions, along with the stop-pause and the stop-squeeze techniques could be beneficial.

If this fails to resolve the problem, one can rely on topical, then oral drugs to help relieving this condition.