@ johnnyboy
Copy this into any text editor:
<?xml version="1.0" encoding="utf-8"?>
<root dependsOn="Iconic.xmlc">
<settings>
<element id="MainPanelMargin.Left">1</element>
<element id="MainPanelMargin.Right">1</element>
<element id="MainPanelMargin.Top">1</element>
<element id="MainPanelMargin.Bottom">1</element>
</settings>
<colours id="Default">
<element id="ApplicationBackColour" bg="R,G,B" />
<element id="HeaderBar" bg="0,0,0" fg="249,249,251" bdr="R,G,B" />
<element id="TabsBar.BorderLine" bdr="R,G,B" />
<element id="TabsBar.TabInCaptionBarTop.BorderLine" bdr="R,G,B" />
<element id="Panel.SectionHeader.Default.Border2" fg="R,G,B" />
<element id="Panel.Body.Default" bg="29,31,35" fg="198,217,241" bdr="R,G,B" />
<element id="Panel.ChildHeader.Default.Border2" fg="R,G,B" />
<element id="Panel.StatusBar.Default" bg="0,0,0" fg="143,152,159" bdr="R,G,B" />
<element id="Content[TrackDetail].Body.ListHeader" bg="14,15,17" fg="223,233,246" bdr="R,G,B" />
<element id="Content[TrackDetail].Body.Default" bg="29,31,35" fg="198,217,241" bdr="R,G,B" />
</colours>
</root>
Change the "R,G,B" values to colour of your choice (original yellow was 255,192,0) and save with your skin name and an .xml extension.
Place it in the same folder as the original Iconic skin is and use.
This is not going to change all the yellow, only the majority of the border lines.
This part:
<element id="MainPanelMargin.Left">1</element>
<element id="MainPanelMargin.Right">1</element>
<element id="MainPanelMargin.Top">1</element>
<element id="MainPanelMargin.Bottom">1</element>
also reduces the bold 2px main border to only 1 px width.
If you still want the wide border in your new colour, just delete that part from your skin .xml