The paintings are gorgeous. I agree with you about the mustard yellow, and feel that it makes the paintings pop out in the ones where it appears, at least in my eye. I love how the pose of the hands in the holiness painting, is the same pose that Lady Mary has her hands in, in front of the coop.

One detail I really like, and I don't know if I am overthinking this, is the cobweb above the lantern chimney. The circle above the lantern has no webbing as real life cobwebs would burn away at that point due to the heat coming out of the chimney.

loved this entire set, including the photo and paintings, as well as the hats. Great art!!!