What happens in our body that make our veins look blue, although they are full of red blood? Follow Tech Insider ... red than the vein itself. So, the color contrast enhances the veins' bluish ...

Period blood color variations, such as bright red, brown, or black, are typically normal and reflect changes in menstrual flow. However, unusual colors like orange or gray combined with discomfort ...

Bright red isn't the only possible period blood color. You may notice dark red or pink blood at different points during menstruation. Period blood color can even be black, orange, green ...