The frog needs to be isolated in a hospital tank ASAP. Keeping it at room temperature should be OK. All my frogs are kept between 65-72 degrees. My first thought is that your frog is suffering from petechial hemorrhage (broken capillaries) caused by chryseobacterium. If this is the case, there isn't much of a cure. Only a vet could make that determination. The vet would probably need to do a blood smear and culture to determine the cause. I'm sorry I couldn't be more sure