From 5 to 8 Months: Reaching, Recognizing and Recalling
At around 5 months old, a baby's ability to see how far an object is from them (called depth perception) has developed more fully. They are seeing the world in 3 dimensions (3-D) more completely. They get better at reaching for objects both near and far. They also have good color vision at this point, though not quite as fully developed as an adult's.
Really? I do know they were recommending black and white mobiles when my kids were very young. Could be related.
https://www.aao.org/eye-health/tips-prevention/baby-vision-development-first-year
Their racism is in greyscale.