Yellowing (and Oranging!) in White Paints

Here's an interesting test put together by Jonathan Linton over at his blog Theory and Practice:

http://jonathanlintonfineart.blogspot.com/2010/05/white-test-5-years-in-making.html

While some of the results are fairly disturbing, it's interesting to note that most of the color change occurs in areas where the paint is very thick.

Moral of the story: choose your white carefully, and watch those impastos with plain, white paint!