Muddy water calls for pure chartreuse or a firetiger pattern. Of course, at night or on dark, heavily overcast days colors like black or purple work well. I believe in them and I use them. They add color, wiggle and provide bulk. Under most conditions white or pearl-white are my favorite.
Chartreuse adds often needed visibility.
A good rule of thumb for trailer colors is to complement your skirt color. As usual I could go on and on. We've barely scratched the surface. There is so much more about spinnerbaits we need to talk about. Maybe in a follow-on column.