Black and white images are nostalgic, and when one thinks of old historical images they are always in black and white, because before 1907 anyone who wanted a colour picture would have to hire a colorist to do it for you using dyes and pigments.
Auguste and Louise Lumière are brothers who revolutionized colour photography with their process which they named the Autochrome Lumière. The new process used dyed grains of potato starch and light-sensitive emulsion which could produce colour in vintage photographs without the need for any additional colorization. It was an expensive practice but none the less very popular.
Have a look at this collection of stunning vintage images in color using the French brothers groundbreaking technique.