This tendency coincides with the period when Hals gained fewer commissions from the wealthy, and some historians have suggested that a reason for his predilection for black and white pigment was the low price of these colors as compared with the costly lakes and carmines. Both conclusions are probably correct, however, because Hals did not travel to his sitters, unlike his contemporaries, but let them come to him. This was good for business because he was exceptionally quick and efficient in his own well-fitted studio, but it was bad for business when Haarlem fell on hard times.