[silveror0]

Didn't I read or hear somewhere that they used really strong red filters when shooting "night" scenes during the day?

Could be, but if the full filter factor were applied I doubt it would give that appearance. Using a partial filter factor might do it, but that would be underexposure. Using ortho film with red filter might work though.

p.s. Sorry about hijacking the OP's thread. I'll behave now.