Some time ago I asked a similar question, but none of the suggestions were acceptable to, uh, "she who must be obeyed".
And I forgot to say that the existing splashboard wasn't just wood, but an actual window, with the usual wood frame, molding (sp?), pane-separators, etc.
Right now it's painted in an off-white or eggshell color, via an acryllic paint.
Which is of course getting destroyed, by the usual water, detergent, etc.