Could any of the following be related?
From eq2ui_ImageStyles.xml
Code:
<ImageStyle Name="progress_grayscale_fill">
<ImageFrame Name="progress_grayscale_fill" Source="images/window_elements_specific.dds" SourceRect="382,341,505,356"/>
</ImageStyle>
<ImageStyle Name="progress_fill">
<ImageFrame Name="progress_fill" Source="images/window_elements_generic.dds" SourceRect="16,352,27,353"/>
</ImageStyle>
<ImageStyle Name="progress_grayscale_bkg">
<ImageFrame Name="progress_grayscale_bkg" Source="images/window_elements_specific.dds" SourceRect="379,357,508,378"/>
</ImageStyle>
I'm at work now, and dled a mod that included most of the ui files, so maybe this is way off.