See the actual feathers (it seems, you decide) from the location where Dragon scales were suspected to be located in recent Google searches. Greg went and harvested some samples which are in route to MFU now and will soon be looked into.
There is still a question as to the exact anatomy but Greg reports when water is applied the become magically iridescent. We have all seen feathers with fabulous glows and colors. Hopefully the microscopic analysis will be conclusive.