just popped up in this month's releases. Waiting for @peteski to do a write up on hoe to make them functional with micro LEDs and duct tape . . . .
Neah, I already rolled my own (for friend's CONX gasoline train).
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I suspect the MT version uses laser-cut task board or laser board. It is easier for me to make them out of yellow-painted black styrene (for opacity). Using a 0402 red LED. No duct tape is involved - real men use gaffer's tape.
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Photos have been taken during construction ind write-up is in the works (buried with 100 other projects I am working on).