My friend surprised me with a code for the Jewel of the Firelord helm tonight, I was impressed with it to be fair, even though it's not something I would say was worth £10, This one at least is continual, no fading out or anything, and quite vibrant, however it does clip through some of the female shammies hairstyles, which can make it look a little off.
I took a few screenies of a few different hairstyles with it on, nothing hugely outstanding imo.
http://imgur.com/a/Wvq95 I'm still going through other hairstyles though
Haven't seen the other 2 in game yet.