I made my own modification for the rating colour to be the same (grey) for highlighted and unhighlighted songs in the Track Detail view:
\\ --- STAR RATING
<!-- 64--> <element id="Panel.StarRating.Default" fg="137,140,145" fg2="255,255,255" />
<!-- 65--> <element id="Panel.StarRating.Highlight" fg="137,140,145" fg2="76,149,230" />
<!-- 66--> <element id="Panel.StarRating.Lowlight" fg="235,238,215" fg2="183,183,183" />