At 02:02pm May, 4 2008 :
Easy. There is only one number from each color in each house. So, once you have told it the color too, then it knows. This is stupid.
At 10:21am Apr, 10 2008 :
Numbers 58 and 59 were not backed by gold or silver. They were minted in 1935 and 1934 respectively, and the gold standard was removed by the rulers of the world (the Federal Reserve) on May 1st, 1933.