Monsters can't spawn here, should we render this blocks with yellow squares?

Info:
Fabric 1.15.2
MiniHUD 0.19.0-dev.20200427.222110

The overlay doesn't currently do any collision shape checks other than checking for a normal cube. This was mainly done to make updating the overlay a bit cheaper and faster. But I could add an option to also check the collision shapes at least for the spawn marker.