A B&W 60mm Clear (Colorless) Multi-Resistant Coated (MRC) Glass Filter is for color as well as black and white films. It also serves as a permanent lens protector.
The value of a clear filter covering a lens has been well-documented over the years. How many stories have we all heard about photographers dropping lenses and smashing front elements? With a front lens protection filter on, the chances of preserving the valuable glass in your lens increases many fold. Shall we call it a form of inexpensive insurance?