The shortage of dyestuffs since the war has led to newsprint and some
other papers being made of “natural” darker shade of color, and the
Madison laboratory has been investigating the question of whether
this darker color produces any additional eye strain or eye fatigue.
The investigations show that it does not. This is in line with the
generally-held opinion previously that eye fatigue would be even less
where paper was not brilliantly white, on account of the lessened
contrast between the ink and paper.