The Day palette also has some of the evening colours and sometimes it makes just as good and even better sunset paintings than the Evening palette. So trying both is recommended. On the other hand the Evening palette has none of the grey and blue cloud colours of the Day palette and is therefore less capable of creating paintings of scenery with blue skies and white clouds.
Most of these images are desktop wallpapers I have found on the net. I have not done any pre or post work on any of them (other than reducing the size of the finished paintings from 4000 to 1600 px width), I just ran DAP about 10 to 30 thousand strokes.