The bulk update request #3533 is pending approval.

change category warm_lighting (486) -> meta
change category cool_lighting (30) -> meta
create implication warm_lighting (486) -> lighting (15994)
create implication cool_lighting (30) -> lighting (15994)

Reason: The lighting tag is already a meta tag, so it would make sense if the specific lighting tones are meta tags as well (just like the warm colors and cool colors tags). In adition, it should be implied that lighting is present if a specific lighting tone is specified.