No, not what you're thinking - Ketchup did not, I repeat, did not change it's color to white.
MSN posted a great article of 50 all-time new uses for old things and this was one of them. Put pancake batter in an old (cleaned, because I absolutely HATE ketchup and the smell of it) ketchup bottle and tada! No mess pancakes!!!
Check out the rest of the article and new uses for old itemshere!