Someone could probably figure out a more optimal method but here's what I did to remove the icons altogether. First, replace CoreRPG's library_recordtype window class like so:
<windowclass name="library_recordtype">
<sizelimits>
<minimum height="34" />
</sizelimits>
<script file="utility/scripts/library_recordtype.lua" />
<script>
</script>
<sheetdata>
<stringcontrol name="name">
<anchored position="insidetopleft" offset="40,7">
<right offset="-25" />
</anchored>
<font>reference-r</font>
<multilinespacing>20</multilinespacing>
<disabled />
</stringcontrol>
<buttoncontrol name="base">
<anchored position="insidetopleft">
<right />
<bottom />
</anchored>
<description control="name" />
<script>
function onButtonPress()
DesktopManager.toggleIndex(window.getRecordType()) ;
end
</script>
</buttoncontrol>
<buttonc_checkbox name="sidebar">
<anchored height="20" width="20">
<top anchor="center" offset="-10" />
<right offset="-10" />
</anchored>
<script>
function onValueChanged()
window.onOptionChanged();
end
</script>
</buttonc_checkbox>
</sheetdata>
</windowclass>
Then in the Lua script I simply commented out the setIcon() function:
function setRecordType(sNewRecordType)
bHandleOption = false;
sRecordType = sNewRecordType;
local sDisplayText = LibraryData.getDisplayText(sRecordType);
name.setValue(sDisplayText);
--icon.setIcon(LibraryData.getDisplayIcons(sRecordTy pe));
synchState();
bHandleOption = true;
end