I can't tell anything from the pics; but scratching isn't a good sign. If these blotches just come and go, I think its probably the common "stress color" many fish, especially angels & tangs, develop. That will stop with time. I doubt the cleaner fish is doing much, they don't eat ich or similar parasites. I'd just watch him day to day and watch for small, salt-like spots, peeling skin, and and serious behavior problems. (Lethargy, more scratching, heavy breathing, feeding stops, the blotches look infected, etc. ) Flames don't always acclimate well and I think this fish is still going through that.