I've seen Bakie (from YouTube BakieGaming) make "Invisible Dance Floors" and the "Invisible Walls"; as well as the "OMSP" pegs (I'm not sure who made it. I think it's KitkatsSimporium). All of which are (obviously) invisible yet they still work as normal.
So, all this to ask how I can make something have a optional invisible swatch?
I'm trying to make the ice/skating rinks from Seasons have an optional invisible swatch to choose from.
Thanks in advance for any help and/or advice you provide!