When you are sitting, your toes or feet may turn slightly
blue because of decreased blood flow. The color will usually return to normal
when you move your legs and get blood moving into them again.
your toes or feet become pale or blue and the color does not rapidly return to
normal, blood circulation to your toes or feet might be decreased. These
symptoms may be more serious if other changes occur to your lower legs and
feet, such as thinning of the skin, sores that don't heal, development of pain,
or loss of hair.