Is there a skin element for the spectrum visualizer that is displayed in the sidebar, main panel, and now playing panel? I know there's one for the players:
<element id="PlayerFlat.SpectrumDefault" bg="30,30,30" />
<element id="PlayerFlat.SpectrumDead" bg="255,255,0" />
<element id="PlayerFlat.SpectrumLow" bg="255,200,0" />
<element id="PlayerFlat.SpectrumMedium" bg="255,127,0" />
<element id="PlayerFlat.SpectrumHigh" bg="255,0,0" />
I've been unable to find any others.