The length of time nicotine remains in the blood stream depends on the amount consumed and the frequency of consumption. Nicotine can stay for 48 hours. Beyond this time it is not detected either in the blood or urine. However, the cotinine metabolite can leave traces for about 7 days.
The Color Blue. The color blue is the color of trust and responsibility. This color is one of trust, responsibility, honesty and loyalty. It is sincere, reserved and quiet, and doesn't like to make a fuss or draw attention. It hates confrontation, and likes to do things in its own way.
Green has been proven to be pleasing to human senses being associated with calmness, wealth, generosity, good luck and fertility. It is also the colour of peace. It is worth noting that the colour yellow biologically makes people feel more optimistic and energetic as it stimulates the release of the feel-good chemical seratonin.