Thats a fact, anodizing will eat the steal balls away.
The only problem I saw with the drop kick was that the bearings inside the drop kick were pressed in, and they were steel bearings. This meant that you could not take the bearings out and have the drop kick anodized to match your gun. And from what I was told, you can't anodize the piece an aluminum part with steel bearing still inside.
I would not copy their mounting system anyway, I'll do something diffrent.
So, in order to make a wedge that could be anno'd (by the user), you would either have to make the bearings out of aluminum (probably not feasible), find a way to secure the asa to the wedge without the use of setscrews and bearings, or design the wedge so you could easily remove the bearings, have it anno'd, then re-install the bearings.