Sorry your frog is not well Kara . Can't tell what is causing discoloration on supraorbital ridge. Has it been steady since you discovered it or is it spreading? Also, notice a reddish discoloration near leg in first pic. Can you tell us about that too?

Recommend take frog to a herp veterinary (Arav or Herp Vet Connection) for a check up. If can't get an appointment soon, try giving frog a 20 minute salt bath couple times a day until you can get frog to vet.

Mix one teaspoon aquarium salt in one gallon 80F dechlorinated tap water and give bath in small critter keeper or plastic bowl with holed up top filled with salt solution to frog's chin depth. Good luck !