Meine Herren !
Excuse me for not having corrected with HSL magenta and blue down to zero; on my screen it didn't look so bad.
The light bulbs in the museum do have an awful spectrum of greenish/magentish/blueish light.
In Lightroom, the setting 'automatic' wasn't able to deal with it - and that says a lot, since it often works fine.
After having corrected it, there still was a rest of magenta and blue dominating...
To the eye the ligth of the bulbs wasn't nice either I noticed and regarding presentation of the artifacts I was not happy
with it anyway.
Gunther