Colin Colahan ( 1897 - 1987 ) was an Australian painter. Colin Colahan s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 7785.02 USD for Portrait of a Gentleman in 2005 to 8758.76 USD for Ballet of Wind and Rain (Holland '45) in 2012 , based on the size and medium of the artwork.