Jean francois gilles Colson ( 1733 - 1803 ) was a French painter. Jean francois gilles Colson s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 2124.41 USD for Portrait d'une femme assise in 2004 to 6356.87 USD for Portrait d'homme en habit bleu in 2008 , based on the size and medium of the artwork.