The old color film is often processed as black and white since color dyes usually decompose faster than silver-based layer.

And since color dyes fade at differing rates, it is up to the individual restorer to bring tones back into balance.

Mushrooms can be used to create color dyes.

It produces deep, rich browns that cannot be achieved with modern color dyes.

Films designed for E-3 are prone to fading because of inferior color dyes.

The chemical formula of alternative color dyes typically contain only tint and have no developer.

This leaves behind only the formed color dyes, which combine to make up the colored visible image.

After the silver images are developed, color dyes couple to the metallic silver specks.

By doing this, the silver is retained in the emulsion along with the color dyes.

Where liquids are used, special color dyes may be added to help see the leakage.