I don’t like the incongruity between the turquoise portal membrane and a magenta tunnel, so this simple mod overhauls the warp tunnel effect when using the large alien portals. To see an animated capture of the effect (and possibly stare into the void for looping eternity), click here.
This modifies the following files and will conflict with anything else that alters them.
Unzip, stick .pak file in your MODS folder.
1.0 – Release.