Skin scatters more blue light than red ... Skin around the vein looks more red than the vein itself. So, the color contrast enhances the veins' bluish hue. More from Video ...

Spider veins, a milder type of varicose veins, are smaller than varicose veins and often look like a sunburst or "spider web." They are red or blue in color and are commonly found on the face and legs ...

It is generally marked with characteristic blue-hued veins running throughout the otherwise white or yellow cheese -- though the color in your "blue" cheese can also be green, yellow, pink ...