Damn @slaw, my copy of Lucinda's s/t Rough Trade LP shows light through it as well! I had never noticed that before.
I have her Good Souls Better Angels album in the limited edition translucent/frosty white vinyl pressing. The hype sticker reads "Natural uncolored virgin vinyl. The cleanest formulation." I wonder if the vinyl is the Clarity that MoFi is using for their 1-Step LP's, and Analogue Productions for their UHQR?
In the YouTube video of the Kind Of Blue roundtable discussion, the point is made that the black color of normal LP's contains trace elements of iron, and that is why demagnetizing an LP is a real thing.
