Which preposition to use with translucency

of Occurrences 3%

Ten-day-old tadpoles fed on pineal present a marked translucency of the skin due to a retraction of the skin pigment cells.

behind Occurrences 1%

There was a crystal, turquoise translucency behind the exquisite snowy peak, which seemed to stand there facing God, forgetful of the world behind it, remote and reverent and most serene in the light of His glory.

Which preposition to use with  translucency