I imagine your boy in the store, sourounded by colored fabrics, it must have been a dream to him. As it would be the case with my son here. They're very curious and if colors are involved, then that's a YES for sure. Curiosity and learning PoWer!
and yes, now that you said it, I relaized I didnt mention this in my post. He was HAPPY all the time when making activities like this. He was always involved and I didnt force him to want do the activity. Not even once. Thats why I worked with him so early. He was very very cooperative and...logical in the way he could resolve the tasks.
Blessings for you too!