This cannot be allowed under any circumstances because this is what links the map geometry together.
Yes, it will break any mod that tries to play with these variables, but any such mod has to be considered broken by design and must be stopped.
The values were still 8 and 32 respectively which applied to hardware from last decade, but for modern mods these are simply too low. New values are 64 as minimum and 128 as default.
- added script access to a sector's colormap and specialcolors fields. (Writing only through dedicated functions because these fields are render state which may need to trigger some form of refresh if the renderer changes.)
This is to block modification of the planes directly. For future-proofness with renderer changes everything that alters these values should go through he function interface.