My Wera lasertips aren't gold coated. =( And I have no idea why!
<-- jealous.
When I ordered them, the product photos showed the set as having gold colored laser tips. Ah well.
The Lasertip screwdrivers underwent a running change from black to gold-colored tips. The difference is purely cosmetic (easier to see the laser etching against the gold color), and the performance is the same.
All of our stock is now gold colored!
As a bit of background, ACR was originally desigend as a system, and was intended to use the ACR bits or drivers together with ACR screws. The screws have corresponding ribs inside the screw recess, that the ribs on the tools could engage with. In reality, however, the screws are very difficult and expensive to manufacture, and most people don't use them. So, what happens is, you get a bit with half of the contact surface not actually engaging with the interior of the screw recess on a normal screw! This is why we developed the diamond-coating for bits, and the Lasertip treatment for the screwdriver blades. They both provide much stronger grip in the screw, and an earlier poster is correct... the damage to the screws (and the tools) only happens when the camout occurs.
Hope this helps!