I notice that the style of the new version has not carried across the alternate row shading of v4.
I've re-added this to some custom widgets but thought I'd put forward it be part of the standard widgets (of an option perhaps).
Asset lists and the like have a line separator so it isn't as tricky to visually line up items and totals etc (and I acknowledge that when sorting in v4 the alternating row colours did not change so it got a bit out of whack).
I have used "whitesmoke" as bgcolor for odd rows.