Color is an abstract and difficult word, not as concrete and vivid as Mommy, Daddy and Tutu. Babies need to repeat many times, with the help of more specific color stimuli, such as blue sky and red apples, in order to slowly understand the vocabulary of color and establish the concept of color.
A 4-year-old baby may not be interested in color recognition yet. He is more interested in climbing, running, jumping, playing with water, playing with sand and playing with toys. You can make him recognize colors without worrying. Let him have fun and play with what he likes. This is a good early education!
I hope it helps you! Dear, if you have time, learn more parenting experience, so that you can better educate your children! If you have time, you can go to the Happy Island website and study in the parent-child park. I look forward to meeting you and discussing with you later!