Royston also makes the primer you are looking for. I understand the color being yellow but when I was using this product it was black then. They may have changed the color over the years. The product was called Royston Greenline Tape and was sold in a kit that included the primer in a spray can and the tape.
There are also some types of tape that are primerless. The primer is integrated in the tape now. If you Google Royston Pipe Wrap you will see more options.
You could perhaps just get away with a can of yellow oil base spray paint.