I started getting "freckles" on my feet and legs now they are almost one solid freckle. i have pitting edema in my feet and legs?

Could be : Venous stasis dermatitis.....you need to control the venous insufficiency as best as possible,...though this won't get rid of the discoloration.l.

See a doctor ASAP: This can be a sign of poor circulation or valvular disease in the legs

Hemosiderin deposits: From chronic swelling the red blood cells break down depositing hemosiderin in the skin.