system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do mirrors/reflective surfaces "feel" grey/silver?

If they are supposed to be reflective, I guess a mirror is just the color of things around it. Nevertheless, mirrors and things like mercury are usually perceived to be sort of... Shiny grey. Why is that? Is it just a visual illusion or is there something about that color?
gpt
A perfect mirror reflects 100% of all light. But nothing is a perfect mirror. Some seem green because the glass used in them absorbs the color the least, so more green comes back to you than the other colors. Silver, grey and white are both not actually colors as wavelengths of light. They are the perceived combination of all visible wavelengths. So in theory they are just different kinds of all colors being reflected equally. Specific names are then probably down to impurities. So some greys are warmer bc they have more red in them. Silver differs from grey and white not only in the specific impurities but also it refers to the object being shiny.  
So tldr : a perfect mirror would have no color for itsself but everything absorbs at least a little bit of some wavelengths, giving it a light touch of colour.