These are some examples of faded or color shifted slides that have been restored in Photoshop. Most of them fall into two categories, badly color shifted Ektachromes or faded Anscochrome.
This picture of the DRGW Alamosa narrow gauge shops taken in 1960 is badly color shifted, a typical problem with old Ektachrome slides.
This a faded somewhat over exposed Anscochrome taken in 1959.
Photoshop made the old Anscochrome look almost like Kodachrome.