It would be nice if you code a second warp plate or an event that can toggle it's ability to only warp to like coloured plates.
Eg:
Event OFF:
Plate A is red. plate B is green. Plate C is red. Plate D is green.
Plate A, B,C and D can all warp to each other.
Event ON/Special brick:
Same plate letters and colours as before, except:
Plate A can only warp to plate C, and other red plates, and vice versa.
Plate B and D can only warp to other green plates.
Either way, this mod is damn fancy. Onwarp events would be neat, too.