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).
Impression. Based on our research, most people would imagine a person with the name Allison to be: A dreamy person who is young at heart, kind, and gentle. In one word, you might describe Allison as a(n)  dreamy  person. See other dreamy names for boys and girls.he following chart shows the popularity of the name Allison in the USA, over the past 100 years. USA baby name statistics. You'll need the Adobe Flash Player and a browser with JavaScript enabled to see all baby name popularity charts.