I am not sure whether to call this a suggestion or a bug or both. I decided to post it here as it was my original intent to do so. In my own opinion, I believe tethers should be turned off within the character's inventory (or when the stack is on the ground), as it is not connected to the base like the play may or may not be.
Also, when trying to give a screenshot with a non-full stack of tethers, I have noticed they have different textures on the tethers themselves and not lit like I thought it up should have been.
So what do you guys think, should we have our tethers black like the older textures or should we have them light up in as a stack? Since it doesn't have any power or oxygen in them innately, I would say the latter doesn't make as much sense in this case.