These Tefillin came in today.
As you can see the contrast from the spots that was repainted to the state that they were when they came in, as you can see they were clearly not black.
When Tefillin straps are not black the Tefillin may only be worn when there are no other Kosher pairs available, and a Brachah can not be made.
Look over your straps to ensure they are black. If they are not you can bring them in for us to paint them. If you only need a few touch ups you can purchase a Marker or Bottle to do the job.