<Layers>
<Layer level="BORDER" textureSubLevel="1">
<Texture>
<Size x="334" y="21"/>
<Anchors>
<Anchor point="BOTTOMLEFT" x="1" y="5"/>
</Anchors>
<Color r="0" g="0" b="0"/>
</Texture>
</Layer>
Pretty sure its this one Line 410 @ AddOns/Blizzard_ReforgingUI/Blizzard_ReforgingUI.xml