Degas to Dali
Of course this is not true of all of them - some are extremely well executed as well as being clever and interesting.
Learned a bit about applying glazes - the middle ground hills are glazed in the shadow areas to slightly modify the shade, which was initially too dark. The trees also are mainly achieved with successive glazes until the correct colour and shade was achieved.
The foreground hills were mainly painted with mixes of Yellow Ochre, Burnt Umber and Titanium White. The background hill colours are mixed from French Ultramarine, Cadmium Yellow Light and Crimson. The sky is Phthalo blue tinted with Titanium White.