In December of 2012 we hired an interior painter for a large job (walls, ceiling and trim of first floor, stairs and 2nd floor hallway). We were very happy with the work but a few months ago we noticed some issues with the trim. It looks as if they skipped or missed many spots. I'm not sure why the missed spots became more noticeable - maybe the longer days and more natural light allowed us to see the color variations or maybe the paint changed/discolored over time. But the color variation is quite apparent now (2 different shades of white). My kids notice it all the time.
In any case, the painter believes that we interfered in the job somehow - they believe that either we, or someone we hired, painted over their work. This is absolutely not true. They claim that the creamier/darker of the two whites is not the white we requested (BM White Dove). They painted with a sample from a new can and it does in fact look a bit less creamy, more of a stark white. They also claim that the current work is not theirs as they are professionals and would never do such a sloppy job. We're very puzzled and also angry that we've been accused of interfering with the work and/or lying about it.
Does anyone have experience with this? I wonder - could it be they didn't properly stir the trim paint? My theory is this - they didn't properly stir and as the progressed through the house the paint got darker as the more pigmented paint was at the bottom of the can. The spots missed are often where the wall and the trim meet (or in crevices of the trim and paneling), which leads me to believe that they were using the 'darker' paint from the bottom of the can on the 2nd coat.
I should note that we're using oil-based paint on the trim. We're trying to correct some extensive issues on with trim - the contractor who flipped our house on '07 painted latex over the old, oil-based trim (probably without primer) causing widespread chipping and peeling. I understand oil-based paint can yellow over long periods of time - but it's only been 8 months.