can molecules in the air cause colors to fade?

Answer 1

Yes. Oxygen and ozone in the air will react with your clothing, causing discoloration. But, usually, discoloration is caused by exposure to sunlight.

Answer 2

Yes, oxygen can react w/ the dyes and other coloring agents, and cause them to fade.

Ozone can do this too, usually much faster, but there is typically little ozone around humans.

I suppose water my have an influence as well.

Usually the reactions are promoted by light (UV light has the energy to cause the most reactions...fluorescent lights give off UV light, and you will notice fading due to them over time. Visible light will too, as you might see w/ things left in the car.)

Answer 3

Need more info.
are you talking about air molocules bending/refracting light, changeing the 'percieved' colour(Not mis-spelt, i'm english, i speak english. properly.)
Or are you wanting to know if the presence of air can remove/alter colour?

Oxygen(as an oxidiser) will react with most things, and some distortion of colour is likley.

different densities of different composite gasses in the atmosphere would bend and refract light, altering the wavelength of light, therefore altering the percived colour.
(but how could you ever tell...)

If you was to use an electro-magnetic/gravetic device of enought power you could(theoretically) bend light around an object, essentially rendering it invisible.

Answer 4

oxidation