Sounds like a damn fine idea to me! There must be some better solutions, aesthetically, that could be developed. I am a fan of the rough-and-ready look of, say, an open coil zebra perhaps matched with a nickel covered humbucker. But, some guitars really demand a neater look so it would be great to have options. Especially as I generally prefer the sound of uncovered humbuckers. BK do a lot of different bobbin colours, obviously, but some more options would be good. How much you can start covering the pickups, and what with, before it starts affecting tone, in not sure. Presumably, using metallic paint, for example, might have an affect.