Following the line of thought in striving for absolute perfection; I found both renderings of these tabs dissatisfying and it kept itching.
After a restless night, many sketches, drawings, very complicated mathematical calculations, and a bottle of Lagavulin I think I got it.
pic.3 should do it....?
one thing i did find slightly distracting is the Now Playing panel tabs is indented - suggest you try it with this element to see if it works better:
<element id="NowPlayingTabsLeftFlush">true</element>