>Casein is also used as the binder medium for certain paints.  Egg
>tempera paints use egg yolk, casein colors use casein.  Both produce
>an extremely durable, _clear_ film, which lets the artist produce
>bright, luminous colors.  "Tempera" is just a word for pigment
>suspended in some emulsion.  So poster paints are "tempera" paints,
>but not the same as egg tempera.  I don't know if the "non-toxic"
>poster paints sold use casein as part of the binding.  Artists' colors
>sometimes do.
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What are casein colors? Are they a certain set, identified as such?

Also, anyone find other hidden milk sources- My son is in Daycare, and they
use glue at least 1x/week. His skin is extremely sensitive to Milk, and
even starts scratching if he strongly smells a milk product.
Oh, for our Canadians- the white Glue company is called Conros Corp-(in the
US it's sold as Ross) any clue how to get a hold of them and ask about
casein?