I work with several different yarn blends. The light
acrylic yarn by Caron is extremely soft, washable, and a
good selection. Color cards are here:
http://www.caron.com/color_cards/cc_simplysoft.html
http://www.caron.com/color_cards/cc_brites.html
The soft washable wool blends are made by Plymouth Yarns.
These yarns are gorgeous and a few have a lovely heathered
effect. Some also slightly change colors throughout, as
seen in Ellie's sweater on our Gallery Page (Ellie is in
her dad's arms). A good color card is provided by
Yarns-And.com:
http://www.yarns-and.com/Plymouth/plyencore.htm