Design aesthetics change for different reason. The chemical plant I work at, we had a colorful control system but are switching to a duller color one that looks

Design aesthetics change for different reason. The chemical plant I work at, we had a colorful control system but are switching to a duller color one that looks gray scale and colors are reserved for alarms. The theory behind it, color on a grey scale screen will capture attention, but if everything has color, the uniqueness of flashing red for alarms is drowned out and doesn't draw the attention as well. It stands out better.