Why not try Heavy Rubber bondage in "innocent" white? In any case it is a great contrast to black latex.
This Heavy Rubber Bondage Collar is made of 3mm thick white double-layered natural rubber, and has a metal D-ring in front, to which handcuffs or a chain for fixing can be attached.
The collar is 40 mm wide and has an adjustable buckle in the neck. Optional the buckle can be equipped for locking with a padlock.

To ensure that this collar fits securely, please refer to the size chart.
The shown hood and the shirt are not included.