So, for a while now I've tried to make a chameleon circuit construct with the sea lantern as my TARDIS lantern. I always get "You cannot customize the chameleon circuit with that type of block!" But it's there, surely they've included it because I swear I've seen other TARDISes with it as their lantern. I've had several suggestions, from making sure to completely fill up the open slots to typing in /tprefs lanterns on to even typing int /tprefs lanterns on for that specific lantern's ID. None of this has worked. The last thing I could imagine is that it's either there as a horrible April Fool's prank, or it's a higher build level than I am. On a side note, I hate forgetting to press abort and letting the construct menu eat items.