One thing that you notice about trenbolone is that it is often a golden-brown / rust colour when in oil solution. If the hormone powder is refined to greater than % purity or so, then the colour of trenbolone in solution actually gives a very light golden colour, much like other testosterone products; however, refining the hormone to this level of purity is extremely difficult. This is why there is colour variation from batch to batch with different underground labs; something as small as % purity can affect the colour of the final product.
As for testosterone; you understand how important testosterone is to the human body; in-fact, it is one of the most important hormones we produce. Through the use of anabolic steroids our natural testosterone production is suppressed and while total suppression varies with each and every steroid, Nandrolone steroids have a 100% suppression rating. Without testosterone supplementation your body will not have the testosterone it needs to function properly; no matter how special you believe you may be or what your friend may have told you, if you supplement with a Nandrolone hormone you wont be making any testosterone. It is important to note when Deca 300 use comes to and end and once it and any other anabolic steroids have cleared your system your natural testosterone production will begin again; however, during the actual cycle it will not exist. By supplementing with exogenous testosterone we eliminate this problem, we provide our body with the testosterone it needs to function and as a bonus only enhance our Deca 300 use as the testosterone hormone in of itself is highly anabolic.