Hi Paul!
Matter of fact, the same reaction to the reflective properties displayed in the video has been voiced over on SimHQ's forum too, and VikS from GT replied that the effect can be "tuned down".
Sounds like they may plan to give the look another tweak.
(would be interesting if they could make the reflective properties display "bump" technology.....that is simulate minor highlights and low points in the canvas surfaces as it panned in the sun, and thereby make the airframe's covering look more irregular in appearance)
We've all seen genuine period flight footage that shows some of this stretched canvas actually vibrating with the airstream, but having this effect added would really be asking for the sun!
Like PC said above, any other reactions/opinions on this?