paint for kids' wooden toys
I'm seeking recommendations about paint to use on wooden toys. I'll be giving these away on a small scale, so I'm not concerned about the CPSIA, though I am still concerned about basic child-safety. I definitely want the paint I use to be AP certified as non-toxic.
I'd also like the colors to be rich and saturated, but not opaque; I want the wood grain to show through. And I'd like to be able to get primary colors and then mix my own, so smooth mixing matters to me. Any suggestions? What have you used? Acrylic? Tempera? Watercolor? Any particular brands that you would recommend (or recommend avoiding)?
Any advice would be greatly appreciated.