I actually love the bad picture taking from the buyer perspective. I helped a friend find a great house that way -- the pictures made it look bad but they were just bad pictures, the house itself was good!
That kind of happened with our house, too -- it used to be painted a really bright color, and evidently people hated it. It was on the market for a long time before I saw it. I noticed the color but a) didn't actually mind that much, b) it's the OUTSIDE of the house. Of all possible renovations/ fixes, that's a pretty easy one.
As it happened, the sellers were getting so much bad feedback about the color that they went ahead and had it repainted between our first and second viewing -- there was a big handwritten note at our first viewing saying "WE ARE PAINTING THE HOUSE" with swatches of the new colors.
Anyway, it knocked at least 10% off of the price I think, and in the end we didn't even have to do anything about it.
Colors of interior walls are a similar thing, not that hard to redo and makes such a difference. (Especially in terms of light.)