 Here's how you can help a child learn to recognize colors. You can ask the child to pick a color for the day. Let's say they pick red. Then as you are going about your day, you and the child can point out things that are that color. For example, you might say, that tomato is red. You can ask the child, do you see anything red? And the child might say, that bird is red. And you might say, that car is red. And the child might say, they have a red bag. You can continue taking turns finding things that are red. The next time, they can pick a different color. Focusing on one color a day reinforces their ability to recognize colors.