Did it happen to you?.. Normally how long till we can start noticing?

Can it be because for frequent traffic ?.. I did notice this in some shops which applied vinyl flooring but very evident in those area where ppl walk alot.. Also I think this is where the quality of vinyl comes to play..

Good tip.. I'll keep an eye as my color is considered bright.. I wanted dark colored but the boss of the house wanted to match the bed and cabinet.. Haha.. Thanks.