Yeah I can't believe non of the devs realised that dark rides / dark coasters tend to be.. you know, dark.It was a stupid decision to have lights on these coasters anyway given we can attach scenery now.
Just remove them altogether if it's too much work to add a toggle.
Also don't forget that we were able to change the front light colour on the mine cart coaster in Planet Coaster 1, so this really is an unnecessary step back in many ways.