Crochet Thread for Baby Clothes

[Lighting57]

I crocheted for years with yarn and then with the cotton threads.
From time to time I still stop knitting and work with crochet.

I found a pattern in Crochet Today about three years ago for a baby dress made using the ripple crochet method. It would make very nice gifts for new babies. However the pattern calls for cotton thread. A new mother is not going to have the time or desire to block this dress each time it is washed.

Does anyone know of a crochet thread that is a nice blend of maybe cotton and rayon, or any other that would give nice results?

I have looked at what sock yarns are available to me, but they all have drab colors mixed in them. I can never find solid color sock yarn.

I know I can buy online, but I'd rather be able to see and feel first hand before buying.

[Antares]

What about a bamboo yarn? I don't know much about its washing/drying requirements, but it is very soft and often is a thinner yarn.