S.S. Great Britain, Picture 17, Bristol, England (UK), 2012

This is the sick bay. They chose to make it a far less disgusting display than would be realistic. The blue cast is, I think, a result of the lighting, which isn't original. While the Great Britain had a higher level of technology than the typical 1840's hotel, electric lighting simply wasn't made yet. In all likelihood, the original oil lamps wouldn't have caused the blue cast.