A co-worker and I got into a discussion about the color of his shirt. I said it was tan, a very light tan, but tan nonetheless. He insisted it was white. He's wrong (of course), but you be the judge.
On the left is the color of his shirt. Clearly, his shirt is not white! If it were, you would only be able to see the outline of the box (like the actual white box on the right). He can claim his shirt is white all he wants ... but it's not!