When I was a carpenter's helper in high school (early 90's), every house that was being flipped had to have beige walls, tile and accessories, though the appliances were stainless, so not much has changed.
When we were last looking for houses, I visited a couple of houses for which a beige makeover would have been a legitimate improvement. One house had a living area that was Post-It Note yellow from floor to ceiling, unbroken and undifferentiated. Perhaps it didn't look so bad when it was furnished but even with my diminished concern for color I can't imagine it could ever have looked good to me. Presumably it worked for them, though, since it had clearly been that way for a while (i.e., not a recent makeover just to sell the house).
Something that clearly was a makeover just to sell the house was the kitchen in the house we ultimately ended up buying. Good news... it wasn't beige! Bad news... my wife hated the color. Even I mustered up a signficant dislike for it. Salmon, with fairly light wooden cabinetry. Fortunately, we saw past the color and simply painted it fairly soon after moving in, but it's not hard to imagine that impacts buying decisions. (The house had several other bold color choices. Most of the rest were nice enough. We've since painted over all of them, but perhaps rather it would be more accurate to say we've decorated over them, with decoration themes that were incompatible with the original colors. The only thing in the house that we painted over was the salmon in the kitchen.)
Neither of us watch HGTV but we happened to once catch an episode where some professional designer did exactly the kitchen we ended up with, salmon with light wood cabintry. If it wasn't the episode they got the idea from it might as well have been. Still blech, professional or otherwise.
When I looked at houses an alarming number of them (including the one we bought) were painted this way! I cannot imagine the rationale behind that, it looks absolutely awful. Another troubling (to me) trend is cheap looking wall stickers. So yeah, beige must be out now!... That doesn't mean its replaced with better.
Bold colors are hard to do right (I am not artsy) so I don't try too hard making things unique. Neutral is fine with me (which includes beige). I also absolutely detest decorations, they are nothing but clutter to me. If it doesn't serve a functional purpose I want it out of my house.