Suggest Treatment For Dark Skin On One Leg After A Swelling Episode

I HAVE A RIGHT LEG THAT WAS SWOLLEN AND NOW THE WHOLE BOTTOM HALVE OF MY RIGHT LEG FROM MY KNEE TO MY FOOT IS DARKER THEN THE OTHER LEG. I LOOK LIKE I HAVE 2 DIFFERENT COLORS MY LEFT LEG IS LIGHTER AND MY RIGHT LEG IS DARKER WHAT CREAM CAN HELP MY LEG LIGHTEN UP AND MATCH THE OTHER LEG? SO BOTH MY LEGS WILL BE THE SAME COLOR