We have a 14 year old Brazilian Cherry floor. It is a lighter color under some of the carpets, but when we took them up the floor color evened out. BUT in one area it is actually darker under the one 5 foot round carpet- and when we took up that carpet the coloring didn't change at all- have you ever heard of that- could it be some kind of chemical in the carpet? any suggestions on how we can even out that floor? it's in a bright room with no direct sunlight.

The backing on some area rugs have a plasticizer that will migrate through the finish and darken the wood. It takes time for it to evaporate and get lighter again. Warmth will make this happen sooner.

wow, Thanks so much- I'll try maybe a light shining on it tomorrow!