system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why is dust grey? When it settles it seems to be one homogeneous colour and texture.

I was under the impression that it was made up of a wide variety of different things from skin to dirt. Why does all dust look the same?
gpt
Do you remember in school, when you mixed 5-6 different kinds of paint together? It becomes this mucky grey colour.

Dust is like that, lots of different colours all mixed up. But when you see it from a distance, it looks grey.