Couldn't help myself - made a video solution to this adventure.
https://www.youtube.com/watch?v=slWjHttsFYw
For some reason there's a glitch with the teleporters, but that's not your mod - something with WA+ I think. Basically, at least for rainbow teleporters, their textures orbit the actual teleporter after a colour swap, while the colour of the teleporter stays where it's supposed to. And when I say orbit, I mean I've actually tested it in another adventure, and they literally orbit the actual teleporter. It's bizarre.
Also recorded this, and believe me, this is an extremely important video to watch, regarding both this adventure and the concept of red tentacles as a whole.
https://www.youtube.com/watch?v=Gvb3G_lnZSY