Normally, the colors for a 40th birthday are black and white and the theme is "over the hill"
CANE
Over the hill is always 10 to 20 years older than you are at any time.
A. P. Hill was born on November 9, 1825.
Joe Hill was born on October 7, 1879.
Amy Hill was born on May 9, 1953.
Dave Hill was born on April 4, 1946.
Terence Hill was born on March 29, 1939.
Graham Hill was born on February 15, 1929.
Tony Hill was born on June 23, 1956.
Andrew Hill was born on June 30, 1931.
Geoffrey Hill was born on June 18, 1932.