Are green veins good?
While green veins aren't in itself unusual, it's a good indicator of what your blood vessels are doing. These are an indicator of impaired blood flow in the legs and venous insufficiency and can be a warning flag for more serious underlying issues. Why are my veins so green? Green veins are superficial veins located near the surface of your skin. They appear green instead of red because green has a shorter wavelength than red.