Can't edit on the mobile site on my phone but I just reread my post and realized I didn't fully give you an answer to your question. Your blood is very thick, it has a high red blood cell to plasma ratio. Your probably very dehydrated. Plasma is ~90-95% water. Drink more water and your blood will return to its regular color. You don't want very thick blood pumping through your body, especially when using stimulants. Thick blood has a tendency to coagulate and form clots, and stimulants are vasoconstrictors and tend to dehydrate you even more, you risk forming clots and having serious problems with your cardiovascular system. If it is that dark and it hasn't even been separated from the plasma in your body, you NEED more water.