He personally does not like the color yellow, so he required it not used in safety contexts just because of that. So he put workers' safety at risk because he may have to see pictures or tour the area once every quarter. There are more stories like this ad nauseum. Or, you could just read his Twitter feed.
You guys just believe whatever you read.
Things that can easily be debunked with common sense. For example, there's a lot of yellow in this factory tour he did:
