First, there are a lot of fun games you can have your kids play that are available on Internet. Children can learn colors with Bud in the game "What Color" from the "do to learn" website listed in the Resources section. You can also print out a lot of fun color activities from various websites. For example, there are coloring pages and paper crafts found on the "DLTK" website listed in the References and Resources sections.
Next, start collecting objects of different colors, such as magnetic letters for the refrigerator, plastic containers, straws, construction paper, glue sticks, colorful beads, and any other craft items you think the children would find appealing. These will be needed for some of the suggested games and activities below.
"I spy with my little eye" is a fun game to play with your kids. Pick a specific object visible in the room or place where you are, such as a red balloon. Next, you would say, "I spy with my little eye, something red." Now your child would guess all the red objects around you until he guesses the right one.
For another activity, pick up different objects and ask your child which object is a certain color. For example, ask, "Which straw is blue...which straw is orange," and so on.
Sorting objects by color is an excellent learning activity. Begin by gathering objects of different colors along with different colored plastic containers. Have your child sort objects by color. Help her by saying, "Let's put this red horse in the red container and this blue button in the blue container," and so on.
Create patterns with different colored objects. For example, make a necklace or bracelet using different colored beads. Start by creating a pattern with the beads. Help your child identify the colors used and continue the pattern until the necklace or bracelet is finished.
Cut out circles using different colored construction paper. Use a glue stick to create a caterpillar with the different colored circles. Help your child by discussing the color of each circle as he glues it to a large piece of paper.
Children can sort magnetic letters by color when you are in the kitchen cooking. You could have them name both the letter and the color.
Make colorful bubbles by adding food coloring to the bubble mixture. See if your kids can name the colors of the bubbles they're blowing.
When snack time comes, ask your children what color snack they want today. Do they want a red apple, a yellow piece of cheese, or a blueberry...? You can even use food coloring to make snacks a particular requested color, or use it to make specially colored icing for cupcakes.
Think of different ways you can incorporate the colors of everyday objects in your daily routine. For example, point out flowers or dogs you see from your car or fruit or vegetables in the grocery store, and ask kids to identify them. Kids will think it's fun, and they'll be learning at the same time.