[Inkscape-devel] Black background in active sliders

Recently I've notice that active sliders have a heavy and thick black background, different than when disabled. Compare the two cases in the attached file. http://old.nabble.com/file/p31859141/silders.png As you can see, they are taken under Windows XP. (By the way, notice also that the "Opacity (%):" label is not grayed out). Is this intended? Personally I'd prefer having the same thin rail in both cases. Luca