New information requires updating color.
Snowy foreground in lynx diorama is updated.
The secret solution? African porcupine quills.
Restoration included finding new prairie grasses.
Conservators aided by original cast in collection.
The team repairs damage and restores translucence.
Collection specimens used in making true model.
Conserving paintings required expert care.
Special dye mixture used to restore faded fur.
Mix of real and fabricated flora re-creates nature.