Oh!My Fix - A small piece of static cling type of window tint designed for architectural use. Check your local home improvement store.
Just what I was looking for!
I'm bothered by the brightness of the ESP light, which also does not dim with the dashboard light control. That light is on ALL the time in MY rig, and I was trying to figure out something opaque I could cover it with.
I'll be checking that out next time I'm at Home Depot or Lowe's.