Never the Same

One example of where you will find me,
Is many locations inside of one building.

When I’m new I’m remarkably plain,
But after first use, I’m never the same,
Poeple clean me a lot, but I’m never like new,
The changes come off, but leave residue.

You will have seen me in your early years,
I’m definitely a tool for the eyes, not the ears,
But there is a sound that I can make,
To cause the strongest man to quake.

I feel I should give more of a clue,
But I don’t want to make it too easy for you.

I may have bored you, or enthralled,
But can you tell me what I’m called?