[shayan]

Hi,
I search for materials which are sensitive to color light, for instance, when it exposes to red color
become red or when exposes to green color become green.
1:Is there this kind of material?
2: how much is it?
3:what is the properties?
thanks in advance
shayan

[Arkcon]

Well, let's get the simplest answer out the way first -- in what way is color photographic film not appropriate for your application?  Once we have your answer to that question, we can give you a better answer.

[shayan]

Well, let's get the simplest answer out the way first -- in what way is color photographic film not appropriate for your application?  Once we have your answer to that question, we can give you a better answer.

Actually I need material which by turning on and off the color light behind become colored, so I can set the material in a schema of a color map on a board.

[Honclbrif]

I'd look up photochromic dyes and pigments.