I appreciate the ultra fast response!
You are of course correct that the "starred" images have a number next to the star. My problem is that I have to look and focus on that detail to see which are the starred images coming up in the thumbnail time line, while concentrating on the main image.
With the V4 greyed out stars (image attached) I could notice a starred image coming up by glancing down (or out of the corner of the eye) while keeping the eye focused on the main image.
The first thing my colleague (who is still on V4) said to me when he saw me going through a wedding using V5 at the weekend said was "Why have you starred all those images?" so it is quite a noticeable change from V4.
Perhaps it is something you could consider some options for V6, perhaps restoring them to v4 greyed out style, or even removing the star completely for non-starred images, but that might be asking a bit much! :-)
Many thanks,
Adam