
I accidentally swapped a palette of a signal set, then created a scenario that I wanted to play. After hours of fidgeting I created a fun scenario that I wanted to try out. So I start the map in game mode and what do I see? Pink signals!

After some research into this issue, I switched back the palette for the signals NewGRF in the main menu but alas. The scenario I spend hours on creating is practically useless (well of course I can still play it but it diminishes the experience immensely. It's like the game it glitched while it's just a setting).

So the idea is to be able to swap the palette of NewGRF in game as well as outside.
Is such a thing possible? I understand that loading and unloading NewGRF's is as hard to implement as it gets but would a palette swap still be possible somehow?