>Bruce,
>
>It's the inverse color of the 3D object, I doubt there is anything you can do about it. I imagine it's done as a visual cue to let the user know they clicked in there.

Ah, that's what the flicker color is. Yes, I agree, I think we're stuck with it, whatever the reason for its origin...I tried ideas with lockscreen, shifting focus in Scrolled event, etc. Nothing worked without causing nasty side effects, so I will give up and try not to notice it :)