[Isomorphic]

It looks like for Stratus in particular there's some config missing which is present for Graphite and other skins. Adding this should do it:

isc.SpritedScrollbar.changeDefaults("cornerImg", { name: "blank0", baseStyle: "scrollCorner" });

[stonebranch2]

That doesn't seem to change it to a grey color. Still white.

<td class="scrollCorner"><img src="<retracted>/images/blank.gif" width="16" height="16" align="TEXTTOP" style="display: block; height: 16px;" name="isc_8Eblank0" border="0" suppress="TRUE" draggable="true"></td>

[Isomorphic]

This means your scrollCorner CSS style is blank. We'd suggest adding background-color to the relevant states:


.scrollCorner, .scrollCornerDown, .scrollCornerOver {
background-color: #e6e6e6;
}

You may also want disabled state, if you ever forcibly disable scrollbars (rare).