why does hardwood flooring gets darker overtime?

i got a hardwood flooring a few years ago before it was lighter and any place under the rug anywhere else its darker like the colour change over time. why is this? i don’t mind the colour now but just curious why?

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This entry was posted on Tuesday, January 24th, 2012 at 9:06 pm and is filed under Bridgeport CT Hardwood Flooring. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.