Enhancing/Intensifier Filter Question

[Clifton (Rusty) Painter]

Does anyone have a B+W or Tiffen screw-on enhancing filter?
If so, what color is the glass? The only image I've found of one of
these filters is of a square B+W enhancer and it is a copper color.
I erroneously assumed they were all that color and ordered the Hoya from
B&H. When it arrived I was disappointed to see that the Hoya is more
clear with a slight purple tint. I was wanting something more like the
B+W but couldn't find it listed at B&H.

Thanks for any info you can supply.

Clifton Painter