Also, since the blood in your body is a lot darker, the veins appear darker. You may also notice that different sized blood vessels appear to be different colors. Another thing it can depend on is how you see color and how your brain perceives certain color against the color of your skin.
What does Allison mean? Allison [al-li-son] as a girls' name (also used less widely as boys' name Allison) is of Old German derivation, and Allison means noble, exalted. Allison is an alternate spelling of Alice (Old German). Allison is also a variant of Alison (Old German).
Allison is a very prominent first name for females (#228 out of 4276, Top 5%) and also a very prominent last name for both adults and children (#590 out of 150436, Top 1%). (2000 U.S. Census). Displayed below is the baby name popularity of Allison for girls.