in strong relief

References in classic literature ?
Now, probably, they were felt to be in keeping with the dismal and bitter weather, and therefore did not stand out in strong relief, as if the sun were shining on them, but melted into the gray gloom and were forgotten as soon as gone.
Within the antique frame, which so recently had inclosed a sable waste of canvas, now appeared a visible picture, still dark, indeed, in its hues and shadings, but thrown forward in strong relief.
Presently it flared up and showed the whole scene in strong relief, the great mass of white tusks, the boxes of gold, the corpse of the poor Foulata stretched before them, the goat-skin full of treasure, the dim glimmer of the diamonds, and the wild, wan faces of us three white men seated there awaiting death by starvation.