Permanent-skill-only exits will not be happening, if that's what you're referencing.
No, I didn't mean that...
If you just mean as in Blue vs Green lemmings like in 2P mode, with no other differences
Yes, this is what I meant!
this topic isn't the place to discuss that, as it's not an object type.
Ah, right...
At any rate, it's also very unlikely to happen - without even starting to consider any technical considerations, how do you propose it would work visually, keeping in mind there's a limited color space for recoloring and much of it is already used?
I'd suggest looking again at the recolouring scheme/ How about this:
Default Normal lems: Hair colour A and clothes colour X
Default Athlete lems: Hair colour A and clothes colour Y
Default Neutral lems: Hair colour A and clothes colour Z
Alternative Normal lems: Hair colour B and clothes colour X
Alternative Athlete lems: Hair colour B and clothes colour Y
Alternative Neutral lems: Hair colour B and clothes colour Z
This way, it's always clear which lems are Athletes and which are Neutrals by their clothes, and then the hair colour can be changed for alternative-exit lems. These colours could be represented as flags above the exits, as with 2P.
If this seems way too complicated, then maybe it would be best not to do this at all, but to have a look at implementing a straight-up 2-Player mode instead... I think that's really what I'm hoping for, when I actually think about it.
This mode could then have 2 distinct colour sets (e.g. green hair & blue clothes for one player, and pink hair & purple clothes for the other player), which then get swapped for athletes as per the usual routine.
Neutrals and zombies could simply not be featured in 2P mode, which would sort that problem out...