The children have picked out colors; why not do a story with the colors in it?
Once there was a garden bed, brown and sad-looking. It needed a gardener. One day a nice lady looked at that patch of dirt and thought, "What a wonderful place! I'll try to do something here." So she worked every day. She made the dirt rich and strong, easy for flowers to grow in. Somebody gave her a packet of flower seeds, so she planted them and was excited to see what would happen. She watered them every day so they would begin to grow. The little plants began to poke up out of the ground. The lady gave the baby flowers the plant food that they needed. She kept their bed clear of weeds. She worked hard and lovingly. The plants grew taller and stronger. Finally, at the right time, the flowers were ready to bloom. And what flowers! They were all different and all colorful. Some were red; some were blue. Some were yellow; some were orange. Some were tall; some were short. Some had lots and lots of petals, and some had just a few amazing petals. What a beautiful garden it was! How thankful she was that she had worked so hard! How thankful the flowers were that she had taken such good care of them and helped them grow!
That's a start - you can go from there if you like. And if you remember what child picked out what color, you can write, "From Andy (purple), Marie (orange), James (red), Bella (pink), Candace (pink),,," and so on.
