Makes, no difference, if over used or under used. Its a personal preference like any other color. If you like it, use it, if you dont, you use something else. What is over used to one, may be exactly right for another. If you are following trends, then yep, its over used. Best to pick what you like and disregard trends of any color.

Grey? A greyed colour from which Hue Family? Take your pick!

I happen to love gray but I have not used it in every room of my house! I have used 3 shades of Behr gray paints from very light (Sterling) to Dark Pewter for my bedroom. The color I'm sick & tired of is beige! For years and even now, beige is used way too much.

Every house for sale is painted "agreeable gray"....and when you go to list a house the realtor urges you to paint it "agreeable gray". I am sick to death of gray houses....The sweet young ones want to "up date" and over gray every thing.....dove with pewter accents and a pop of green.....Blue fox with slate accents.
It's time to let gray go rest with mauve....
By following a trend you quickly become very un-trendy.
Go look at a copy of an up-scale house and decorating magazine like Archetectural Digest and see how many rooms are gray.

I have no issues with grey walls or grey trim, if you like grey. Grey floors, especially wood and wood-look, is a bridge too far. Grey is a great background for colourful carpets and art but I don't find it appealing as the focal point.

One cannot simply pronounce any color as in, out, overused, whatever. You can have color preferences, of course. We all do. We also know that trends come and go, but that doesn't mean that colors should be summarily dismissed. Since AD was mentioned above, here are some examples from that publication that clearly show how beautiful gray walls can be. Any room with layers and nuance and personality is attractive, in my opinion. I find nothing to dislike in any of these examples.

There are many factors here. Does the house get a lot of natural light? What color is being paired with the gray? What shade of Gray?

I personally dislike beige/tan. Lifeless color to me. Give me a Gray (not a dark one though) any day over dull beige.

Beige then greige, then gray...and I recently read that beige is coming back. Color trends change.

I am just now refreshing the interior of my home, but going with white. Everything looks so crisp and clean, I absolutely love it.

This gray/white madness can't end soon enough for me. Bring back the mauve from the 80s please.

I think grey looks very dated at the moment.

I think you should only go for grey if it is something that makes your heart sing. Otherwise choose colours that you love (yellow? green? blue?).

How can it be dated if so many new homes use it? Obviously it’s what the public wants. Is it possible that different parts of the country use this color more?

I strongly dislike the color gray and find it depressing to look at, especially in large quantities, like floors and walls. Personal preference. I hate that when you go to look at things like flooring, everything is gray toned if not outright gray. For me, any amount of gray is too much. I’ve eliminated all gray except in two places I can’t afford to get rid of- the bathroom floor is slate tile and the fireplace surround is marble tile. I hate both but money doesn’t grow on trees. Luckily, the slate has lots of brown, rust and orange in it. The fireplace surround will be dealt with soon. I am saving my pennies.

you know what I do love? The orange toned oak floors I have. The same kind that so many these days are bemoaning.

Gray is overused for my personal taste in new builds and remodels, but I think it can look nice in moderation, especially when combined with warmers colors (yellow, gold, beige) such as the examples IdaClaire posted for AD. My son's bedroom is painted Stonington Gray but there are other colors, natural elements, and warm brass fixtures to keep his room from looking bland and lifeless, as it often looks (to my eye) when everything in the room is gray/white/black.

The gray trend came later to my area than it did to the coasts, so it's still in full swing here. I think it will date homes in a few years when the trend passes, but just like beige, there will be people who love it and stick with it no matter what becomes trendy down the road.

Gray has its place when it’s put in the right places. As a realtor, I see houses of all ages. Nothing drives me crazier than when I tour an older home with a lot of wood that the owners decide to slap on gray walls thinking they’re updating it, and it looks horribly out of place. Yet I can tour a modern home where they did a beautiful marble bathroom with gray walls and it looks great. The gray on gray floors are a thing of the past, for sure. They weren’t great to begin with and they’re worse now. Most buyers in my area (Florida) are looking for large white tiles for the main living floor. Neutral and goes with everything and will withstand trends. I also don’t see anything wrong with a nice charcoal gray couch. As long as everything is not gray!

These days, it seems to be white that is being over used. I have seen more boring rooms in the last 6 months, than I have ever seen in my entire life.