Lies and Mistakes ;-)
My webpage is actually still up:
< a href= http://users.bigpond.net.au/Nick/White_Rock2.html > White Rock comparison
I'll eat one slice of humble pie for BRF. The colour is NOT tan, as my memory suggested. It IS greyish-white.
The brightness is miserable, though. It's only the contrast with the surrounding dark dust that makes it leap out in a local scene.