It depends on which version of Clarion you are using?
If you are using earlier supported versions (eg C6) then yes, but if you are using later versions (eg C10 / C11) then no - and unfortunately we are at the mercy of SV for this because they control the “Owner Drawn” attribute of the menus RTL.
We do want to find work around solutions and these are still being looked into.
In the meantime, I would recommend using one of our navigation type options (like CommandBars, TaskPanel or ShortcutBar) to replace the Clarion menu. They all have options to automatically read the Clarion menu content and present it within their structure - then hide the Clarion menu. All of these controls are compatible with the SkinFramework control because they are from the same supplier - and not restricted by Clarion’s RTL.
I hope this helps,