Primarily it's down to PeterK unless it's just not knowing about the setting(s) needing to be changed to achieve the desired result (the skin can do so much that it's often hard to find / know what might need to be changed). Though I've only just become aware of the following re: quinto black skin updates - "the future of the skin now depends on Radionomy and what they are going to do with Winamp" so not sure how likely a resolution will be but as you've posted in that other thread then that's the best option you've got.
-dro