system
Given the following post, respond as if you're commenting on Reddit:
human
If I were to have a completely blue shirt in a pitch black room, and i shone every other color in the color spectrum at said shirt, would I see the shirt?

So say if i have a blue shirt, and i had some lights that could shine a very specific light out. And i emitted the colors Red, Orange, Yellow, Green, Indigo, and Violet. Only those colors would come into contact with the shirt, would the shirt be visible?
gpt
If the shirt was a perfect absorber of every non-blue color, then no, the shirt would not be visible under any light except blue. However this wouldn't happen in practice- what we see as a blue shirt is still reflecting those other colors to some extent, it just reflects blue a lot more.